How to get last 4 digit here? : I am Using webide for my development.

In Text field Automatic Value is coming from SAP Backend system.

Please refer Screen Shot.

< Label text="{Kostl}"/ >

I need to get here Last 4 digit and not leading number.





[enter image description here][1]


  [1]: https://i.stack.imgur.com/wsyBh.png