It's probably easier with the Overload mod. On your wing, add a control surface that you want to be your flaps. Then open overload, on the dropdown click Control Surface 1, check that it is the flap and change the input from Roll or Pitch or whatever to VTOL. When you mirror it, you'll need to invert it on the other side. Then you have flaps bound to VTOL
@WNP78 ya, but it will come up if you move vtol up, how do I stop that
@RedRoosterII you'd have to download one that someone else made
It's probably easier with the Overload mod. On your wing, add a control surface that you want to be your flaps. Then open overload, on the dropdown click Control Surface 1, check that it is the flap and change the input from Roll or Pitch or whatever to VTOL. When you mirror it, you'll need to invert it on the other side. Then you have flaps bound to VTOL