EAN 128 Barcode how to display only Serial Number (21)?

Dear all,

 

we are having a ean 128 Barcode on our products.

 

It consist of the Apllications Ident. (01),(17) and (21) , now we would like to display only the digits of the barcode after the (21).

 

I am trying to figure it out using 123 Scan2 but did not come to a solution yet!

 

Does anybody know how I can configure the scanner like this?

 

I really appreciate your help!

 

Thanks and best regards

 

Marten