QE51N - Changing QAPP-USERC1

Hi,

I'm using QAPP_CUST_IP_PROPOSAL to change the value for the field USERC1, in transaction QE51N. But if I have 10 lines in QAPP to modify with this function i can only modify one row. How can i modify all linea at the same time?

I also try with EXIT_SAPLQAPP_001, and it doesn't work.

Thanks,

Sené