diff --git a/charts/jupyter-pyspark/Chart.yaml b/charts/jupyter-pyspark/Chart.yaml
index 782116b7..e8009005 100644
--- a/charts/jupyter-pyspark/Chart.yaml
+++ b/charts/jupyter-pyspark/Chart.yaml
@@ -24,9 +24,9 @@ type: application
 # This is the chart version. This version number should be incremented each time you make changes
 # to the chart and its templates, including the app version.
 # Versions are expected to follow Semantic Versioning (https://semver.org/)
-version: 2.1.11
+version: 2.1.12
 
 dependencies:
   - name: library-chart
-    version: 1.5.29
+    version: 1.5.28
     repository: https://inseefrlab.github.io/helm-charts-interactive-services
diff --git a/charts/jupyter-pyspark/templates/secret-extraenv.yaml b/charts/jupyter-pyspark/templates/secret-extraenv.yaml
deleted file mode 100644
index 63fa9428..00000000
--- a/charts/jupyter-pyspark/templates/secret-extraenv.yaml
+++ /dev/null
@@ -1 +0,0 @@
-{{ include "library-chart.secretExtraEnv" . }}
\ No newline at end of file
diff --git a/charts/jupyter-pyspark/values.schema.json b/charts/jupyter-pyspark/values.schema.json
index 5fc6f134..b9b1778e 100644
--- a/charts/jupyter-pyspark/values.schema.json
+++ b/charts/jupyter-pyspark/values.schema.json
@@ -276,10 +276,13 @@
         "type": "object",
         "properties": {
           "name": {
-            "type": "string"
+            "type": "string",
+            "default": "",
+            "pattern": "^[a-zA-Z0-9_]+$"
           },
           "value": {
-            "type": "string"
+            "type": "string",
+            "default": ""
           }
         }
       }
diff --git a/charts/jupyter-python/Chart.yaml b/charts/jupyter-python/Chart.yaml
index b999b6f1..0faa57e1 100644
--- a/charts/jupyter-python/Chart.yaml
+++ b/charts/jupyter-python/Chart.yaml
@@ -22,9 +22,9 @@ type: application
 # This is the chart version. This version number should be incremented each time you make changes
 # to the chart and its templates, including the app version.
 # Versions are expected to follow Semantic Versioning (https://semver.org/)
-version: 2.1.10
+version: 2.1.11
 
 dependencies:
   - name: library-chart
-    version: 1.5.29
+    version: 1.5.28
     repository: https://inseefrlab.github.io/helm-charts-interactive-services
diff --git a/charts/jupyter-python/templates/secret-extraenv.yaml b/charts/jupyter-python/templates/secret-extraenv.yaml
deleted file mode 100644
index 63fa9428..00000000
--- a/charts/jupyter-python/templates/secret-extraenv.yaml
+++ /dev/null
@@ -1 +0,0 @@
-{{ include "library-chart.secretExtraEnv" . }}
\ No newline at end of file
diff --git a/charts/jupyter-python/values.schema.json b/charts/jupyter-python/values.schema.json
index fcca49ed..8930b068 100644
--- a/charts/jupyter-python/values.schema.json
+++ b/charts/jupyter-python/values.schema.json
@@ -229,10 +229,13 @@
         "type": "object",
         "properties": {
           "name": {
-            "type": "string"
+            "type": "string",
+            "default": "",
+            "pattern": "^[a-zA-Z0-9_]+$"
           },
           "value": {
-            "type": "string"
+            "type": "string",
+            "default": ""
           }
         }
       }
diff --git a/charts/rstudio-sparkr/Chart.yaml b/charts/rstudio-sparkr/Chart.yaml
index 327ea12f..e685e574 100644
--- a/charts/rstudio-sparkr/Chart.yaml
+++ b/charts/rstudio-sparkr/Chart.yaml
@@ -23,8 +23,8 @@ type: application
 # This is the chart version. This version number should be incremented each time you make changes
 # to the chart and its templates, including the app version.
 # Versions are expected to follow Semantic Versioning (https://semver.org/)
-version: 2.1.9
+version: 2.1.10
 dependencies:
   - name: library-chart
-    version: 1.5.29
+    version: 1.5.28
     repository: https://inseefrlab.github.io/helm-charts-interactive-services
diff --git a/charts/rstudio-sparkr/templates/secret-extraenv.yaml b/charts/rstudio-sparkr/templates/secret-extraenv.yaml
deleted file mode 100644
index 63fa9428..00000000
--- a/charts/rstudio-sparkr/templates/secret-extraenv.yaml
+++ /dev/null
@@ -1 +0,0 @@
-{{ include "library-chart.secretExtraEnv" . }}
\ No newline at end of file
diff --git a/charts/rstudio-sparkr/values.schema.json b/charts/rstudio-sparkr/values.schema.json
index f04c205e..8d1f1277 100644
--- a/charts/rstudio-sparkr/values.schema.json
+++ b/charts/rstudio-sparkr/values.schema.json
@@ -234,10 +234,13 @@
         "type": "object",
         "properties": {
           "name": {
-            "type": "string"
+            "type": "string",
+            "default": "",
+            "pattern": "^[^ ]+$"
           },
           "value": {
-            "type": "string"
+            "type": "string",
+            "default": ""
           }
         }
       }
diff --git a/charts/rstudio/Chart.yaml b/charts/rstudio/Chart.yaml
index 741a9438..48c3b125 100644
--- a/charts/rstudio/Chart.yaml
+++ b/charts/rstudio/Chart.yaml
@@ -22,8 +22,8 @@ type: application
 # This is the chart version. This version number should be incremented each time you make changes
 # to the chart and its templates, including the app version.
 # Versions are expected to follow Semantic Versioning (https://semver.org/)
-version: 2.1.7
+version: 2.1.8
 dependencies:
   - name: library-chart
-    version: 1.5.29
+    version: 1.5.28
     repository: https://inseefrlab.github.io/helm-charts-interactive-services
diff --git a/charts/rstudio/templates/secret-extraenv.yaml b/charts/rstudio/templates/secret-extraenv.yaml
deleted file mode 100644
index 63fa9428..00000000
--- a/charts/rstudio/templates/secret-extraenv.yaml
+++ /dev/null
@@ -1 +0,0 @@
-{{ include "library-chart.secretExtraEnv" . }}
\ No newline at end of file
diff --git a/charts/rstudio/values.schema.json b/charts/rstudio/values.schema.json
index 1e9e74dc..2b9de146 100644
--- a/charts/rstudio/values.schema.json
+++ b/charts/rstudio/values.schema.json
@@ -229,10 +229,13 @@
         "type": "object",
         "properties": {
           "name": {
-            "type": "string"
+            "type": "string",
+            "default": "",
+            "pattern": "^[a-zA-Z0-9_]+$"
           },
           "value": {
-            "type": "string"
+            "type": "string",
+            "default": ""
           }
         }
       }
diff --git a/charts/vscode-pyspark/Chart.yaml b/charts/vscode-pyspark/Chart.yaml
index b0c51411..8cb44650 100644
--- a/charts/vscode-pyspark/Chart.yaml
+++ b/charts/vscode-pyspark/Chart.yaml
@@ -24,9 +24,9 @@ type: application
 # This is the chart version. This version number should be incremented each time you make changes
 # to the chart and its templates, including the app version.
 # Versions are expected to follow Semantic Versioning (https://semver.org/)
-version: 2.1.12
+version: 2.1.13
 
 dependencies:
   - name: library-chart
-    version: 1.5.29
+    version: 1.5.28
     repository: https://inseefrlab.github.io/helm-charts-interactive-services
diff --git a/charts/vscode-pyspark/templates/secret-extraenv.yaml b/charts/vscode-pyspark/templates/secret-extraenv.yaml
deleted file mode 100644
index 63fa9428..00000000
--- a/charts/vscode-pyspark/templates/secret-extraenv.yaml
+++ /dev/null
@@ -1 +0,0 @@
-{{ include "library-chart.secretExtraEnv" . }}
\ No newline at end of file
diff --git a/charts/vscode-pyspark/values.schema.json b/charts/vscode-pyspark/values.schema.json
index 87e6d991..f438a5e6 100644
--- a/charts/vscode-pyspark/values.schema.json
+++ b/charts/vscode-pyspark/values.schema.json
@@ -260,10 +260,13 @@
         "type": "object",
         "properties": {
           "name": {
-            "type": "string"
+            "type": "string",
+            "default": "",
+            "pattern": "^[a-zA-Z0-9_]+$"
           },
           "value": {
-            "type": "string"
+            "type": "string",
+            "default": ""
           }
         }
       }
diff --git a/charts/vscode-python/Chart.yaml b/charts/vscode-python/Chart.yaml
index 2b4284b4..763135f1 100644
--- a/charts/vscode-python/Chart.yaml
+++ b/charts/vscode-python/Chart.yaml
@@ -22,9 +22,9 @@ type: application
 # This is the chart version. This version number should be incremented each time you make changes
 # to the chart and its templates, including the app version.
 # Versions are expected to follow Semantic Versioning (https://semver.org/)
-version: 2.1.11
+version: 2.1.12
 
 dependencies:
   - name: library-chart
-    version: 1.5.29
+    version: 1.5.28
     repository: https://inseefrlab.github.io/helm-charts-interactive-services
diff --git a/charts/vscode-python/templates/secret-extraenv.yaml b/charts/vscode-python/templates/secret-extraenv.yaml
deleted file mode 100644
index 63fa9428..00000000
--- a/charts/vscode-python/templates/secret-extraenv.yaml
+++ /dev/null
@@ -1 +0,0 @@
-{{ include "library-chart.secretExtraEnv" . }}
\ No newline at end of file
diff --git a/charts/vscode-python/values.schema.json b/charts/vscode-python/values.schema.json
index 34f1fc69..c6f196cb 100644
--- a/charts/vscode-python/values.schema.json
+++ b/charts/vscode-python/values.schema.json
@@ -238,10 +238,13 @@
         "type": "object",
         "properties": {
           "name": {
-            "type": "string"
+            "type": "string",
+            "default": "",
+            "pattern": "^[a-zA-Z0-9_]+$"
           },
           "value": {
-            "type": "string"
+            "type": "string",
+            "default": ""
           }
         }
       }