MC92N0 - skip first character

Good morning,

 

could you help me please how can I set up my device to skip (ignore) first character? I have following barcode: P225459, I need to scan only 225459, so without "P". I tried to find this setting in DataWedge  v3.7 but unfortunately without succes. There is only prefix, sufix...

 

Is here someone who can help me?

 

Thank you in advance?

David