Like i said in the title, SASMode don't work even if the SAS is on and the Get SASMode return the prograde but in game it didn't put it in retrograde, no error in console or in my app

I use the java api

Fix for retrograde:

refFrame = vessel.getSurfaceVelocityReferenceFrame();
                        vessel.getAutoPilot().setReferenceFrame(refFrame);
                        vessel.getAutoPilot().setTargetDirection(new Triplet<>(0.0,-1.0,0.0));

SAS is not allowed when AutoPilot is enagled:
https://github.com/krpc/krpc/blob/master/service/SpaceCenter/src/Services/AutoPilot.cs#L261

AutoPilot.Disengage() or set AutoPilot.TargetDirection to -vessel.Velocity.

Yes but even with vessel.getControl() it didn't work at all

What version of KSP and what version of KRPC?

I'm using KSP 1.8.1 and 0.4.9-156-g52544abf (as it's write in the VERSION file)

SAS is not allowed when AutoPilot is enagled:
https://github.com/krpc/krpc/blob/master/service/SpaceCenter/src/Services/AutoPilot.cs#L261

AutoPilot.Disengage() or set AutoPilot.TargetDirection to -vessel.Velocity.

Even Target Direction is wrong :(

What version of KSP and what version of KRPC?