diff --git a/lerna.json b/lerna.json
index 2aa0624a5b..ce4a0f2bf0 100644
--- a/lerna.json
+++ b/lerna.json
@@ -2,6 +2,6 @@
   "packages": [
     "packages/*"
   ],
-  "version": "3.4.0",
+  "version": "3.5.0",
   "hoist": true
 }
diff --git a/package-lock.json b/package-lock.json
index a149a79e8c..2ddda13ccb 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "concerto",
-  "version": "3.4.0",
+  "version": "3.5.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "concerto",
-      "version": "3.4.0",
+      "version": "3.5.0",
       "hasInstallScript": true,
       "devDependencies": {
         "colors": "1.4.0",
diff --git a/package.json b/package.json
index 08c3b64ca7..3d52ef751f 100644
--- a/package.json
+++ b/package.json
@@ -17,7 +17,7 @@
   },
   "name": "concerto",
   "description": "You must install [Lerna](https://lernajs.io) to build this multi-package repository.",
-  "version": "3.4.0",
+  "version": "3.5.0",
   "private": true,
   "scripts": {
     "coverage": "node ./scripts/coverage.js \"packages/concerto-*\" && nyc report -t coverage --cwd . --report-dir coverage --reporter=lcov && cat ./coverage/lcov.info",
diff --git a/packages/concerto-analysis/package.json b/packages/concerto-analysis/package.json
index 1da6c2e3be..80e816cf7a 100644
--- a/packages/concerto-analysis/package.json
+++ b/packages/concerto-analysis/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@accordproject/concerto-analysis",
-    "version": "3.4.0",
+    "version": "3.5.0",
     "description": "Analysis of Concerto model files",
     "homepage": "https://github.com/accordproject/concerto",
     "engines": {
@@ -32,11 +32,11 @@
     "author": "accordproject.org",
     "license": "Apache-2.0",
     "dependencies": {
-        "@accordproject/concerto-core": "3.4.0",
+        "@accordproject/concerto-core": "3.5.0",
         "semver": "7.3.5"
     },
     "devDependencies": {
-        "@accordproject/concerto-cto": "3.4.0",
+        "@accordproject/concerto-cto": "3.5.0",
         "@types/jest": "28.1.1",
         "@types/semver": "7.3.10",
         "@typescript-eslint/eslint-plugin": "5.27.1",
diff --git a/packages/concerto-cli/package-lock.json b/packages/concerto-cli/package-lock.json
index 6e699d76d4..2cf74b8344 100644
--- a/packages/concerto-cli/package-lock.json
+++ b/packages/concerto-cli/package-lock.json
@@ -1,20 +1,20 @@
 {
   "name": "@accordproject/concerto-cli",
-  "version": "3.4.0",
+  "version": "3.5.0",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "@accordproject/concerto-cli",
-      "version": "3.4.0",
+      "version": "3.5.0",
       "license": "Apache-2.0",
       "dependencies": {
-        "@accordproject/concerto-analysis": "3.4.0",
-        "@accordproject/concerto-core": "3.4.0",
-        "@accordproject/concerto-cto": "3.4.0",
-        "@accordproject/concerto-metamodel": "3.4.0",
-        "@accordproject/concerto-tools": "3.4.0",
-        "@accordproject/concerto-util": "3.4.0",
+        "@accordproject/concerto-analysis": "3.5.0",
+        "@accordproject/concerto-core": "3.5.0",
+        "@accordproject/concerto-cto": "3.5.0",
+        "@accordproject/concerto-metamodel": "3.5.0",
+        "@accordproject/concerto-tools": "3.5.0",
+        "@accordproject/concerto-util": "3.5.0",
         "@openapi-contrib/openapi-schema-to-json-schema": "^3.2.0",
         "ansi-colors": "4.1.3",
         "glob": "^7.2.0",
diff --git a/packages/concerto-cli/package.json b/packages/concerto-cli/package.json
index 983197ca65..8c98f15648 100644
--- a/packages/concerto-cli/package.json
+++ b/packages/concerto-cli/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@accordproject/concerto-cli",
-  "version": "3.4.0",
+  "version": "3.5.0",
   "description": "Command-line utility for working with Concerto model files",
   "homepage": "https://github.com/accordproject/concerto",
   "license": "Apache-2.0",
@@ -43,12 +43,12 @@
     "tmp-promise": "3.0.2"
   },
   "dependencies": {
-    "@accordproject/concerto-analysis": "3.4.0",
-    "@accordproject/concerto-core": "3.4.0",
-    "@accordproject/concerto-cto": "3.4.0",
-    "@accordproject/concerto-metamodel": "3.4.0",
-    "@accordproject/concerto-tools": "3.4.0",
-    "@accordproject/concerto-util": "3.4.0",
+    "@accordproject/concerto-analysis": "3.5.0",
+    "@accordproject/concerto-core": "3.5.0",
+    "@accordproject/concerto-cto": "3.5.0",
+    "@accordproject/concerto-metamodel": "3.5.0",
+    "@accordproject/concerto-tools": "3.5.0",
+    "@accordproject/concerto-util": "3.5.0",
     "@openapi-contrib/openapi-schema-to-json-schema": "^3.2.0",
     "ansi-colors": "4.1.3",
     "glob": "^7.2.0",
diff --git a/packages/concerto-core/package-lock.json b/packages/concerto-core/package-lock.json
index ff32c0f275..05504519af 100644
--- a/packages/concerto-core/package-lock.json
+++ b/packages/concerto-core/package-lock.json
@@ -1,17 +1,17 @@
 {
   "name": "@accordproject/concerto-core",
-  "version": "3.4.0",
+  "version": "3.5.0",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "@accordproject/concerto-core",
-      "version": "3.4.0",
+      "version": "3.5.0",
       "license": "Apache-2.0",
       "dependencies": {
-        "@accordproject/concerto-cto": "3.4.0",
-        "@accordproject/concerto-metamodel": "3.4.0",
-        "@accordproject/concerto-util": "3.4.0",
+        "@accordproject/concerto-cto": "3.5.0",
+        "@accordproject/concerto-metamodel": "3.5.0",
+        "@accordproject/concerto-util": "3.5.0",
         "dayjs": "1.10.8",
         "debug": "4.3.1",
         "lorem-ipsum": "2.0.3",
diff --git a/packages/concerto-core/package.json b/packages/concerto-core/package.json
index d52e267647..8867c5094b 100644
--- a/packages/concerto-core/package.json
+++ b/packages/concerto-core/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@accordproject/concerto-core",
-  "version": "3.4.0",
+  "version": "3.5.0",
   "description": "Core Implementation for the Concerto Modeling Language",
   "homepage": "https://github.com/accordproject/concerto",
   "engines": {
@@ -71,9 +71,9 @@
     "yargs": "17.3.1"
   },
   "dependencies": {
-    "@accordproject/concerto-cto": "3.4.0",
-    "@accordproject/concerto-metamodel": "3.4.0",
-    "@accordproject/concerto-util": "3.4.0",
+    "@accordproject/concerto-cto": "3.5.0",
+    "@accordproject/concerto-metamodel": "3.5.0",
+    "@accordproject/concerto-util": "3.5.0",
     "dayjs": "1.10.8",
     "debug": "4.3.1",
     "lorem-ipsum": "2.0.3",
diff --git a/packages/concerto-cto/package-lock.json b/packages/concerto-cto/package-lock.json
index 2738828429..553bd74753 100644
--- a/packages/concerto-cto/package-lock.json
+++ b/packages/concerto-cto/package-lock.json
@@ -1,12 +1,12 @@
 {
 	"name": "@accordproject/concerto-cto",
-	"version": "3.4.0",
+	"version": "3.5.0",
 	"lockfileVersion": 2,
 	"requires": true,
 	"packages": {
 		"": {
 			"name": "@accordproject/concerto-cto",
-			"version": "3.4.0",
+			"version": "3.5.0",
 			"license": "Apache-2.0",
 			"devDependencies": {
 				"mocha": "10.0.0"
diff --git a/packages/concerto-cto/package.json b/packages/concerto-cto/package.json
index 6576a21aa0..944b31e81d 100644
--- a/packages/concerto-cto/package.json
+++ b/packages/concerto-cto/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@accordproject/concerto-cto",
-  "version": "3.4.0",
+  "version": "3.5.0",
   "description": "Parser for Concerto CTO files",
   "homepage": "https://github.com/accordproject/concerto",
   "engines": {
@@ -56,8 +56,8 @@
     "typescript": "4.6.3"
   },
   "dependencies": {
-    "@accordproject/concerto-metamodel": "3.4.0",
-    "@accordproject/concerto-util": "3.4.0",
+    "@accordproject/concerto-metamodel": "3.5.0",
+    "@accordproject/concerto-util": "3.5.0",
     "path-browserify": "1.0.1"
   },
   "browserslist": "> 0.25%, not dead",
diff --git a/packages/concerto-metamodel/package.json b/packages/concerto-metamodel/package.json
index 4496dd0f68..adf5212089 100644
--- a/packages/concerto-metamodel/package.json
+++ b/packages/concerto-metamodel/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@accordproject/concerto-metamodel",
-  "version": "3.4.0",
+  "version": "3.5.0",
   "description": "Concerto metamodel utilities",
   "homepage": "https://github.com/accordproject/concerto",
   "engines": {
@@ -51,7 +51,7 @@
     "typescript": "4.6.3"
   },
   "dependencies": {
-    "@accordproject/concerto-util": "3.4.0"
+    "@accordproject/concerto-util": "3.5.0"
   },
   "browserslist": "> 0.25%, not dead",
   "license-check-and-add-config": {
diff --git a/packages/concerto-tools/package-lock.json b/packages/concerto-tools/package-lock.json
index 605b37278d..985d81be85 100644
--- a/packages/concerto-tools/package-lock.json
+++ b/packages/concerto-tools/package-lock.json
@@ -1,16 +1,16 @@
 {
     "name": "@accordproject/concerto-tools",
-    "version": "3.4.0",
+    "version": "3.5.0",
     "lockfileVersion": 2,
     "requires": true,
     "packages": {
         "": {
             "name": "@accordproject/concerto-tools",
-            "version": "3.4.0",
+            "version": "3.5.0",
             "license": "Apache-2.0",
             "dependencies": {
-                "@accordproject/concerto-core": "3.4.0",
-                "@accordproject/concerto-util": "3.4.0",
+                "@accordproject/concerto-core": "3.5.0",
+                "@accordproject/concerto-util": "3.5.0",
                 "ajv": "8.10.0",
                 "ajv-formats": "2.1.1",
                 "camelcase": "6.3.0",
diff --git a/packages/concerto-tools/package.json b/packages/concerto-tools/package.json
index 0175e9aec9..2de84676fc 100644
--- a/packages/concerto-tools/package.json
+++ b/packages/concerto-tools/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@accordproject/concerto-tools",
-    "version": "3.4.0",
+    "version": "3.5.0",
     "description": "Tools for the Concerto Modeling Language",
     "homepage": "https://github.com/accordproject/concerto",
     "engines": {
@@ -67,8 +67,8 @@
         "webpack-cli": "4.9.1"
     },
     "dependencies": {
-        "@accordproject/concerto-core": "3.4.0",
-        "@accordproject/concerto-util": "3.4.0",
+        "@accordproject/concerto-core": "3.5.0",
+        "@accordproject/concerto-util": "3.5.0",
         "ajv": "8.10.0",
         "ajv-formats": "2.1.1",
         "camelcase": "6.3.0",
diff --git a/packages/concerto-tools/types/lib/codegen/fromcto/csharp/csharpvisitor.d.ts b/packages/concerto-tools/types/lib/codegen/fromcto/csharp/csharpvisitor.d.ts
index 9b22a11889..fbc4dba1a0 100644
--- a/packages/concerto-tools/types/lib/codegen/fromcto/csharp/csharpvisitor.d.ts
+++ b/packages/concerto-tools/types/lib/codegen/fromcto/csharp/csharpvisitor.d.ts
@@ -48,6 +48,14 @@ declare class CSharpVisitor {
      * @private
      */
     private visitClassDeclaration;
+    /**
+     * Visitor design pattern
+     * @param {Field} field - the object being visited
+     * @param {Object} parameters  - the parameter
+     * @return {Object} the result of visiting or null
+     * @private
+     */
+    private visitScalarField;
     /**
      * Visitor design pattern
      * @param {Field} field - the object being visited
@@ -56,6 +64,15 @@ declare class CSharpVisitor {
      * @private
      */
     private visitField;
+    /**
+     * Write a field
+     * @param {Field} field - the object being visited
+     * @param {Object} parameters  - the parameter
+     * @param {string} [externalFieldType] - the external field type like UUID (optional)
+     * @return {Object} the result of visiting or null
+     * @private
+     */
+    private writeField;
     /**
      * Visitor design pattern
      * @param {EnumValueDeclaration} enumValueDeclaration - the object being visited
diff --git a/packages/concerto-types/package.json b/packages/concerto-types/package.json
index 5b7bb4c9b6..c8fa420192 100644
--- a/packages/concerto-types/package.json
+++ b/packages/concerto-types/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@accordproject/concerto-types",
-    "version": "3.4.0",
+    "version": "3.5.0",
     "description": "Types for the Concerto Modeling Language",
     "homepage": "https://github.com/accordproject/concerto",
     "engines": {
@@ -32,10 +32,10 @@
     "author": "accordproject.org",
     "license": "Apache-2.0",
     "devDependencies": {
-        "@accordproject/concerto-core": "3.4.0",
-        "@accordproject/concerto-metamodel": "3.4.0",
-        "@accordproject/concerto-tools": "3.4.0",
-        "@accordproject/concerto-util": "3.4.0",
+        "@accordproject/concerto-core": "3.5.0",
+        "@accordproject/concerto-metamodel": "3.5.0",
+        "@accordproject/concerto-tools": "3.5.0",
+        "@accordproject/concerto-util": "3.5.0",
         "eslint": "8.2.0",
         "license-check-and-add": "2.3.6",
         "npm-run-all": "4.1.5",
diff --git a/packages/concerto-util/package-lock.json b/packages/concerto-util/package-lock.json
index 25ab92a1c6..8579669a8a 100644
--- a/packages/concerto-util/package-lock.json
+++ b/packages/concerto-util/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@accordproject/concerto-util",
-  "version": "3.4.0",
+  "version": "3.5.0",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "@accordproject/concerto-util",
-      "version": "3.4.0",
+      "version": "3.5.0",
       "license": "Apache-2.0",
       "dependencies": {
         "@supercharge/promise-pool": "1.7.0",
diff --git a/packages/concerto-util/package.json b/packages/concerto-util/package.json
index 2b5d04dcbf..fd798a833d 100644
--- a/packages/concerto-util/package.json
+++ b/packages/concerto-util/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@accordproject/concerto-util",
-  "version": "3.4.0",
+  "version": "3.5.0",
   "description": "Utilities for Concerto Modeling Language",
   "homepage": "https://github.com/accordproject/concerto",
   "engines": {
diff --git a/packages/concerto-vocabulary/package-lock.json b/packages/concerto-vocabulary/package-lock.json
index 093486490c..339b6d1778 100644
--- a/packages/concerto-vocabulary/package-lock.json
+++ b/packages/concerto-vocabulary/package-lock.json
@@ -1,15 +1,15 @@
 {
   "name": "@accordproject/concerto-vocabulary",
-  "version": "3.4.0",
+  "version": "3.5.0",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "@accordproject/concerto-vocabulary",
-      "version": "3.4.0",
+      "version": "3.5.0",
       "license": "Apache-2.0",
       "dependencies": {
-        "@accordproject/concerto-metamodel": "3.4.0",
+        "@accordproject/concerto-metamodel": "3.5.0",
         "yaml": "2.0.0-9"
       },
       "devDependencies": {
diff --git a/packages/concerto-vocabulary/package.json b/packages/concerto-vocabulary/package.json
index cbfa1b3f8d..3efd3a7263 100644
--- a/packages/concerto-vocabulary/package.json
+++ b/packages/concerto-vocabulary/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@accordproject/concerto-vocabulary",
-  "version": "3.4.0",
+  "version": "3.5.0",
   "description": "Associate human-readable text to model declarations",
   "homepage": "https://github.com/accordproject/concerto",
   "engines": {
@@ -49,7 +49,7 @@
     "typescript": "4.6.3"
   },
   "dependencies": {
-    "@accordproject/concerto-metamodel": "3.4.0",
+    "@accordproject/concerto-metamodel": "3.5.0",
     "yaml": "2.0.0-9"
   },
   "browserslist": "> 0.25%, not dead",