I'm needing help with some FT string. I've got an aircraft with great PSM capabilities but working on making it easier to control, and was wondering if anyone knew how to make a control surface have an additional function when the input is 0. Specifically I would like my control surfaces to maintain current heading when input=0 (like HeadingHold on a tail rotor). I've tried various strings with rotators using this variable as it is already a recognized variable in game. The problem is, it only seems to work with the tail rotor. I may be able to use it in the variable setter but then I would not be able to save the part as a sub assembly which would be my goal. Any help would be greatly appreciated.