Define variables with X-Control

[MulteBerry]

Just a quick question that I think I know the answer to (sadly) but just wanted to double check...

I've got a setup where a midi input has to define some variables before performing an action (as this action depends on the variable). I've tried making the midi trigger an x-clip that defines the variable but the x-clip's action is performed after the x-control even though it's last in the action list (probably due to the ≈100ms delay). So

Is it possible to define variables with a MIDI controller via X-Controls?
Or could there maybe be another way of approaching this?