diff --git a/ui-ngx/src/app/modules/home/components/calculated-fields/components/dialog/calculated-field-dialog.component.html b/ui-ngx/src/app/modules/home/components/calculated-fields/components/dialog/calculated-field-dialog.component.html
index 471c722145..813f6b1b4c 100644
--- a/ui-ngx/src/app/modules/home/components/calculated-fields/components/dialog/calculated-field-dialog.component.html
+++ b/ui-ngx/src/app/modules/home/components/calculated-fields/components/dialog/calculated-field-dialog.component.html
@@ -102,6 +102,7 @@
               [scriptLanguage]="ScriptLanguage.TBEL"
               [highlightRules]="argumentsHighlightRules$ | async"
               [editorCompleter]="argumentsEditorCompleter$ | async"
+              [helpPopupStyle]="{ width: '1200px' }"
               helpId="calculated-field/expression_fn"
             >
               <div toolbarPrefixButton class="tb-primary-background tbel-script-lang-chip">{{ 'api-usage.tbel' | translate }}</div>
diff --git a/ui-ngx/src/app/modules/home/components/calculated-fields/components/test-dialog/calculated-field-script-test-dialog.component.html b/ui-ngx/src/app/modules/home/components/calculated-fields/components/test-dialog/calculated-field-script-test-dialog.component.html
index 6859ff6dab..942d9484b5 100644
--- a/ui-ngx/src/app/modules/home/components/calculated-fields/components/test-dialog/calculated-field-script-test-dialog.component.html
+++ b/ui-ngx/src/app/modules/home/components/calculated-fields/components/test-dialog/calculated-field-script-test-dialog.component.html
@@ -44,6 +44,7 @@
               [highlightRules]="data.argumentsHighlightRules"
               [scriptLanguage]="ScriptLanguage.TBEL"
               [editorCompleter]="data.argumentsEditorCompleter"
+              [helpPopupStyle]="{ width: '1200px' }"
               resultType="object"
               helpId="calculated-field/expression_fn"
             />
diff --git a/ui-ngx/src/app/shared/components/js-func.component.html b/ui-ngx/src/app/shared/components/js-func.component.html
index 3155669f29..07f6dfe1b4 100644
--- a/ui-ngx/src/app/shared/components/js-func.component.html
+++ b/ui-ngx/src/app/shared/components/js-func.component.html
@@ -41,7 +41,7 @@
       {{'js-func.tidy' | translate }}
     </button>
     <ng-content select="[toolbarSuffixButton]"></ng-content>
-    <div *ngIf="helpId" [tb-help-popup]="helpId"></div>
+    <div *ngIf="helpId" [tb-help-popup]="helpId" [tb-help-popup-style]="helpPopupStyle"></div>
     <fieldset style="width: initial">
       <div matTooltip="{{(fullscreen ? 'fullscreen.exit' : 'fullscreen.expand') | translate}}"
            matTooltipPosition="above"
diff --git a/ui-ngx/src/app/shared/components/js-func.component.ts b/ui-ngx/src/app/shared/components/js-func.component.ts
index eccb5cb908..54dc4d0851 100644
--- a/ui-ngx/src/app/shared/components/js-func.component.ts
+++ b/ui-ngx/src/app/shared/components/js-func.component.ts
@@ -106,6 +106,8 @@ export class JsFuncComponent implements OnInit, OnChanges, OnDestroy, ControlVal
 
   @Input() globalVariables: Array<string>;
 
+  @Input() helpPopupStyle: Record<string, any> = {};
+
   @Input()
   @coerceBoolean()
   disableUndefinedCheck = false;