PSoft Account Payable Check Overflow Template Not Triggering

Hi Everyone,

We are converting all the Crystal Check Templates to BI publisher templates. All our checks are Completely Custom. Also , the SOURCE QUERY for the BI Publisher(DATA SOURCE) is custom. We are using the APY2021X1 Report Definition itself.

The problem is that when a vendor has more than 2 remit lines, the extra lines needs to be printed on the overflow template. But, the overflow templates is not getting triggered.

My question is

1) DO I NEED TO MAKE ANY CHANGES IN MY QUERY TO GET THE Pymnt_Ovfl FIELD ? (query is mentioned in the below attached file)

2) Also, How does the PYMNT_OVFL field work  and how does it change to