final CustomFormPopUp customFormPopUp =
new CustomFormPopUp( GuidedRuleEditorImages508.INSTANCE.Wizard(),
GuidedRuleEditorResources.CONSTANTS.FieldValue(),
DSLCustomFormButton.this.customFormConfiguration );
customFormPopUp.addOkButtonHandler( new ClickHandler() {
public void onClick( ClickEvent event ) {
String id = customFormPopUp.getFormId();
String value = customFormPopUp.getFormValue();
btnCustomForm.setText( value );