Palletizing PowerPac - how to control / synchronize 2 flows?


I have a station with 2 robots. The first robot puts bags in a box,  and the second robot picks the boxes and puts them on a pallet.
I set everything up with Palletizing PowerPac, and it works, but both flows start immediately and work at the same time. What I want to happen is that when the simulation is started, only Flow 1 is working and once Flow 1 is finished, then Flow 2 should start automatically.

How can I do this? There doesn't seem to be an option to set it up with Palletizing PowerPac, so I'm trying to do it with RAPID code but I can't figure out how. I checked the manual and on page 269 it says:

Stopping a flow:
1 Set pmFlow_giSelection to select flow.
    The I/O value for the flow is set in the Flow editor. See Flow on page 184.
2 Set pmFlow_giStopOption to select stop option.
3 Pulse pmFlow_diStop to stop the project.
4 Wait until the flow is stopped, which occurs when the flow’s status signal,
pmFlowX_goStatus, goes to 0.

But I don't know how to do these things, I tried to "Set pmFlow_giSelection" using the following RAPID code:
But that gives me an error. I don't know how else to do it.

I would very much appreciate any help with this.