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Making-Sense-Info · Nov 21, 2023 · 0177213 · 0177213
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diff --git a/docs/docs/developer-guide/index-developer-guide.mdx b/docs/docs/developer-guide/index-developer-guide.mdx
@@ -27,18 +27,31 @@ ScriptEngine engine = new ScriptEngineManager().getEngineByName("vtl");
 
 // Add input bindings to engine
 Bindings bindings = new SimpleBindings();
+InMemoryDataset dataset = new InMemoryDataset(
+                List.of(
+                        Map.of("var1", "x", "var2", "y", "var3", 5),
+                        Map.of("var1", "xx", "var2", "yy", "var3", 10)
+                ),
+                Map.of("var1", String.class, "var2", String.class, "var3", Long.class),
+                Map.of("var1", Role.IDENTIFIER, "var2", Role.ATTRIBUTE, "var3", Role.MEASURE)
+);
 bindings.put("a", 1);
+bindings.put("ds", dataset);
 engine.setBindings(b, ScriptContext.ENGINE_SCOPE);
 
 // Execute script
 try {
-        engine.eval("b := a + 1;");
+        engine.eval("b := a + 1; " +
+					"ds1 := ds;" +
+					"ds2 <- ds;");
 } catch (VtlScriptException e) {
 		logger.warn("Eval failed: ", e);
 }
 
 // Get result
 Long result = (Long) engine.getBindings(ScriptContext.ENGINE_SCOPE).get("b");
+Dataset ds1 = (Dataset) engine.getBindings(ScriptContext.ENGINE_SCOPE).get("ds1");
+PersistentDataset result = (PersistentDataset) engine.getBindings(ScriptContext.ENGINE_SCOPE).get("ds2");
 ```
 
 ### Execution mode

diff --git a/docs/docs/user-guide/coverage/general-operators.mdx b/docs/docs/user-guide/coverage/general-operators.mdx
@@ -9,7 +9,7 @@ custom_edit_url: null
 | Name                                               | Symbol |     Supported      |
 | -------------------------------------------------- | :----- | :----------------: |
 | Parentheses                                        | ( )    | :heavy_check_mark: |
-| Persistent assignment                              | <-     |        :x:         |
+| Persistent assignment                              | <-     | :heavy_check_mark: |
 | Temporary assignment                               | :=     | :heavy_check_mark: |
 | Membership                                         | #      | :heavy_check_mark: |
 | User-defined operator call                         |        | :heavy_check_mark: |