BAdI HRPAD00INFTY before output

I try to set field P0001-ANSVH in BAdI HRPAD00INFTY Method BEFORE_OUTPUT during a hiring action.

In debug modus I can see: P0001-ANSVH is set correctly.

Than, of course, I give P0001 back to Innnn.

But infotype field remains empty.

What's wrong?