Thanks for the swift reply Hans
Seems slightly more convoluted than I initially thought. It would be so much easier if you could just type in a value in the same vein as you would, using the max or min parameters that you can add to the action group.
Might there be any mods that add this functionality to pistons, hinges and the like?
Then again, I assume the KAL would be necessary to get some more complex things going anyway. I might as well get used to it