Pick from stack

Hey everyone,

I have an issue with picking from a stack. I use a custom routine for transport with a robot, the first part is placed correctly on the black cube, but the second one is picked and placed with an offset of the first part’s height in Z Axis. Not only that, I want to use the Process Node #3 as base for the robot, but only the Process Node is in the dropdown menu available. In some PM example layouts (PM Layouts: Press Line), they use the Process Node of the stack process as base and then the Lin Motion point of picking moves automatically down with the stack.
The simulation file is attached below. Don’t wonder about its function, I had to erase and exchange almost everything because I’m not allowed to upload the original.

20210726_Quick_Example.vcmx (250.2 KB)

Thanks in advance.