How to send items to one of the floor storages in a processflow

In my model there are 3 floor storages each connected to a processor, and I want to create a model where it first checks to see if there are any empty slots left in any of these storages and then send items to their proper destination. I used this condition on my conditional decide activity in the processflow:

WHERE slot.hasSpace($1.item) AND slot.zoneID == "A" OR slot.zoneID == "B" OR slot.zoneID == "C"

I want to know:

1) Can this approach work correctly?

2) How should I determine the unload destination of the crane as I don't know which storage might have space?

I'll upload a simpler version of my model here.

Thanks in advance!

Q to different storages- test.fsm

Software Version:

FlexSim 22.2.0