Vibrate on DualShock4

[UKTailwind]

Vibrate is not working for me on a DualShock4, is this to be expected or is it me? The routine I'm using is below and this is called just after I read the analogue values and the buttons which works perfectly. Vibrate is a float between 0.0 and 1.0 and prints when changed as expected so I know the routine is being called.

if (vibrate!= lastvibrate) {
	printf("%f", vibrate);
	lastvibrate = vibrate;
	if(vibrate>0.0)gamepad->startVibration(vibrate);
	else gamepad->stopVibration();
}

[gorbit99]

Truth be told, I don't have a DS4 on hand right now to test. But is this on windows or linux or what system exactly?

[UKTailwind]

Sorry - should have said W11.