Simple UDF to remove first digit from field

Hi,

unfortunately my searching for a solution was not successful.

I need a UDF to remove the first digit from a field in mapping !

The problem:

The field content length can vary from time to time, so a simple substring does not work.

So e.g. from 1029374 to Z56373 5583645908d374 anything is possible!

And I need to get rid of the first digit always.

Thank you for your help!

Best regards

Dirk