Collect Function doesn't work

Hi, guys!

 

Collect function doesn't seem to work on the model that I am currently building. I have created line item subset using one of the modules I have created. I used this line item subset in my current module which has the same dimensions as with the source module where the subset comes from.

 

I can't figure out why is this happening. 

 

Appreciate any help! Thank you!

 

 

Answers