BAQ report - PCID stage

Hello,
i am working on a request from production floor in MES.
in the report quantity screen, production wants to issue a label.
So, i created a BAQ report. but I found I can not add a filter on PkgControlStageHeader.PCID. I don’t know why.
I tried PkgControlHeader.PCID, it is available. But at Report Quantity, the PCID is in StagItem table. So, I stuck here.

anyone can help on that.

thanks,

Eddy