Confirmation system status

Hello,

I need to pull out system status for each confirmation in a production order. I tried to use the below logic.

Pass OBJNP to JEST to get STAT where INACT <> ‘X’ and OBJNR = AFPO-OBJNP

But the AFPO-OBJNP is empty. I do not understand how to get the system status for each confirmation from JEST.