Adding UD table's records via DMT (What do we have to put in key1,...,key5 if we manage auto increment by BPM )

Hello everyone, thank you in advance for your help.
I created a UD Form and I manage my primary key with a BPM (in GetaNewUD10) by putting it in Key1. But if I want to do a DMT to add rows in table UD10, I don’t know what to put in template in KEY1 field to make my BPM trigger.
If I leave all the key1, …, key5 fields blank, the DMT uploads correctly, does not generate any error, but there is no row added in the UD10 table.
Have you ever had the same problem?