This property is a string as the unique identification of current selected item in the Multilevel Menu element. The identification will be in "a.b.c" format. For example, if you select the "Word Document" item in the menu showed below, the property value will be "4.2.2".
Format in expression: [Element.selectionIdentification]
Example: [MultilevelMenu_1.selectionIdentification]
This property is available for Multilevel Menu