Hi robleer,
I've found through trial and error that if you want to use pick or pick one or more from, then you have to keep the SEND within the same process.
So you can either use
Pick one or more from .....
Create ....
Send.....
Or CREATE
PICK ONE OR MORE FROM
SEND
It doesn't really matter as long as they are all in the same process.
I have a similar process which uses
ENTER NEW .....
PICK ONE OR MORE FROM ....
SEND