diff --git a/src/rules/rules.js b/src/rules/rules.js
index 729c0a5b..8cd2e526 100644
--- a/src/rules/rules.js
+++ b/src/rules/rules.js
@@ -362,9 +362,10 @@ function _addFromHashMap (hashMap, key, object) {
  * @param {*} input raw Java input/context, see
  * {@link https://github.com/openhab/openhab-core/blob/main/bundles/org.openhab.core.automation.module.script/src/main/java/org/openhab/core/automation/module/script/internal/handler/ScriptActionHandler.java ScriptActionHandler}
  * and {@link https://github.com/openhab/openhab-core/blob/main/bundles/org.openhab.core.automation.module.script.rulesupport/src/main/java/org/openhab/core/automation/module/script/rulesupport/shared/simple/SimpleRuleActionHandler.java SimpleRuleActionHandler}
+ * @param {boolean} [javaEventBackwardCompat=false] enables backwards compatibility with pure Java event object in UI-based rules
  * @returns {EventObject}
  */
-function _getTriggeredData (input) {
+function _getTriggeredData (input, javaEventBackwardCompat = false) {
   const event = input.get('event');
   /**
    * @type {EventObject}
@@ -468,6 +469,49 @@ function _getTriggeredData (input) {
 
   _addFromHashMap(input, 'module', data);
 
+  // backward compatibility with the pure Java event object
+  if (javaEventBackwardCompat) {
+    const itemState = data.receivedState ?? data.newState;
+    if (itemState) {
+      Reflect.defineProperty(data, 'itemState', {
+        get () {
+          console.warn('event.itemState is deprecated, use event.receivedState for update triggers or event.newState for change triggers instead.');
+          return itemState;
+        }
+      });
+    }
+    if (data.oldState) {
+      Reflect.defineProperty(data, 'oldItemState', {
+        get () {
+          console.warn('event.oldItemState is deprecated, use event.oldState instead. If you use Blockly, simply resave the script.');
+          return data.oldState;
+        }
+      });
+    }
+    if (data.receivedCommand) {
+      Reflect.defineProperty(data, 'itemCommand', {
+        get () {
+          console.warn('event.itemCommand is deprecated, use event.receivedCommand instead. If you use Blockly, simply resave the script.');
+          return data.receivedCommand;
+        }
+      });
+    }
+    Reflect.defineProperty(data, 'type', {
+      get () {
+        console.warn('event.type is deprecated, use event.eventName instead. If you use Blockly, simply resave the script.');
+        return data.eventName;
+      }
+    });
+    if (event.receivedEvent) {
+      Reflect.defineProperty(data, 'event', {
+        get () {
+          console.warn('event.event is deprecated, use event.receivedEvent instead. If you use Blockly, simply resave the script.');
+          return data.receivedEvent;
+        }
+      });
+    }
+  }
+
   return data;
 }
 
@@ -477,5 +521,6 @@ module.exports = {
   isEnabled,
   setEnabled,
   JSRule,
-  SwitchableJSRule
+  SwitchableJSRule,
+  _getTriggeredData // exposed for converting the event in UI-based rules inside the add-on
 };
diff --git a/types/rules/index.d.ts b/types/rules/index.d.ts
index 3a13f01d..f86d86a3 100644
--- a/types/rules/index.d.ts
+++ b/types/rules/index.d.ts
@@ -6,6 +6,7 @@ declare const _exports: {
     setEnabled: typeof import("./rules").setEnabled;
     JSRule: typeof import("./rules").JSRule;
     SwitchableJSRule: typeof import("./rules").SwitchableJSRule;
+    _getTriggeredData: typeof import("./rules")._getTriggeredData;
 };
 export = _exports;
 //# sourceMappingURL=index.d.ts.map
\ No newline at end of file
diff --git a/types/rules/rules.d.ts b/types/rules/rules.d.ts
index b5433fd9..5e0cdea6 100644
--- a/types/rules/rules.d.ts
+++ b/types/rules/rules.d.ts
@@ -213,4 +213,16 @@ export function JSRule(ruleConfig: RuleConfig): HostRule;
  * @throws {Error} an error is a rule with the given UID already exists.
  */
 export function SwitchableJSRule(ruleConfig: RuleConfig): HostRule;
+/**
+ * Get rule trigger data from raw Java input and generate JavaScript object.
+ * This method is not intended for direct use in user scripts, but used internally by JS Scripting.
+ *
+ * @private
+ * @param {*} input raw Java input/context, see
+ * {@link https://github.com/openhab/openhab-core/blob/main/bundles/org.openhab.core.automation.module.script/src/main/java/org/openhab/core/automation/module/script/internal/handler/ScriptActionHandler.java ScriptActionHandler}
+ * and {@link https://github.com/openhab/openhab-core/blob/main/bundles/org.openhab.core.automation.module.script.rulesupport/src/main/java/org/openhab/core/automation/module/script/rulesupport/shared/simple/SimpleRuleActionHandler.java SimpleRuleActionHandler}
+ * @param {boolean} [javaEventBackwardCompat=false] enables backwards compatibility with pure Java event object in UI-based rules
+ * @returns {EventObject}
+ */
+export function _getTriggeredData(input: any, javaEventBackwardCompat?: boolean): EventObject;
 //# sourceMappingURL=rules.d.ts.map
\ No newline at end of file
diff --git a/types/rules/rules.d.ts.map b/types/rules/rules.d.ts.map
index df30a84c..6677169b 100644
--- a/types/rules/rules.d.ts.map
+++ b/types/rules/rules.d.ts.map
@@ -1 +1 @@
-{"version":3,"file":"rules.d.ts","sourceRoot":"","sources":["../../src/rules/rules.js"],"names":[],"mappings":";;;;;;;;;;;cAec,MAAM;;;;cACN,MAAM;;;;mBACN,MAAM;;;;qBACN,MAAM;;;;cACN,MAAM;;;;eACN,MAAM;;;;mBACN,MAAM;;;;gBACN,MAAM;;;;eACN,MAAM;;;;eACN,MAAM;;;;YACN,MAAM;;;;cACN,MAAM;;;;oBACN,MAAM;;;;UACN,MAAM;;;;cACN,OAAO;;;;YACP,MAAM;;;;eACN,MAAM;;;;iBACN,MAAM;;;;eACN,MAAM;;;;gBACN,MAAM;;;;YACN,MAAM;;;;;;;;;;;;;mCAOT,WAAW;;;;;;;;UAKR,MAAM;;;;kBACN,MAAM;;;;eACN,cAAY,aAAa;;;;aACzB,YAAY;;;;SACZ,MAAM;;;;WACN,MAAM,EAAE;;;;gBACR,MAAM;;;;gBACN,OAAO;;;;qBACP,MAAM;;AAkFpB;;;;;;;IAOI;AACJ,gCAHY,MAAM,GACJ,OAAO,CAUpB;AAED;;;;;;;;;IASI;AACJ,6BALY,MAAM,SACN,MAAM,SACN,OAAO,QAalB;AAED;;;;;;;;IAQI;AACJ,+BAJY,MAAM,GACJ,OAAO,CAQpB;AAED;;;;;;;IAOI;AACJ,gCAJY,MAAM,aACN,OAAO,QAQlB;AAED;;;;;;;;;;;;;;;;;IAiBI;AACJ,mCAJY,UAAU,YAiErB;AAED;;;;;;;;;GASG;AACH,6CAJW,UAAU,YA8CpB"}
\ No newline at end of file
+{"version":3,"file":"rules.d.ts","sourceRoot":"","sources":["../../src/rules/rules.js"],"names":[],"mappings":";;;;;;;;;;;cAec,MAAM;;;;cACN,MAAM;;;;mBACN,MAAM;;;;qBACN,MAAM;;;;cACN,MAAM;;;;eACN,MAAM;;;;mBACN,MAAM;;;;gBACN,MAAM;;;;eACN,MAAM;;;;eACN,MAAM;;;;YACN,MAAM;;;;cACN,MAAM;;;;oBACN,MAAM;;;;UACN,MAAM;;;;cACN,OAAO;;;;YACP,MAAM;;;;eACN,MAAM;;;;iBACN,MAAM;;;;eACN,MAAM;;;;gBACN,MAAM;;;;YACN,MAAM;;;;;;;;;;;;;mCAOT,WAAW;;;;;;;;UAKR,MAAM;;;;kBACN,MAAM;;;;eACN,cAAY,aAAa;;;;aACzB,YAAY;;;;SACZ,MAAM;;;;WACN,MAAM,EAAE;;;;gBACR,MAAM;;;;gBACN,OAAO;;;;qBACP,MAAM;;AAkFpB;;;;;;;IAOI;AACJ,gCAHY,MAAM,GACJ,OAAO,CAUpB;AAED;;;;;;;;;IASI;AACJ,6BALY,MAAM,SACN,MAAM,SACN,OAAO,QAalB;AAED;;;;;;;;IAQI;AACJ,+BAJY,MAAM,GACJ,OAAO,CAQpB;AAED;;;;;;;IAOI;AACJ,gCAJY,MAAM,aACN,OAAO,QAQlB;AAED;;;;;;;;;;;;;;;;;IAiBI;AACJ,mCAJY,UAAU,YAiErB;AAED;;;;;;;;;GASG;AACH,6CAJW,UAAU,YA8CpB;AAeD;;;;;;;;;;GAUG;AACH,wEAHW,OAAO,GACL,WAAW,CAsJvB"}
\ No newline at end of file