svarar på min egen fråga med infon som jag fick från Mikado.

you need the Expert Aux Channels App.
Then, you find Setup Tools/Extensions/Aux Channels.
There, you can go Expert Aux and dial in Cell 1 (Elevator) and Cell 4 (Rudd/Aux2) with input Aux 5 (Control Cell for flaps), and set three values (Min/Max/Center). To reverse, reverse the algebraic sing.

In Cells 5 and 6, you can set the Delay (5) and Input (6).

Here’s more info https://www.vstabi.info/en/node/1797

To get the signals, you can split the servo wires for the flap servos, get power from any free port or use a Y harness, and put both signal wires into one servo connector (center and lower pin), which then goes into the RXA port.

It’s only a coarse approach, but you _can_ do flaps even with a Mini VBar.