QGC Sending Set Position Using Vehicle SendCommand

I am attempting to use the Mavlink send_command included with Vehicle from QML to send the set_position_target command from QML. I know this needs to be sent at 2Hz to function correctly.

I am able to call the lib and execute the command from my QML with:

This is placing the vehicle in an erroneous Flight Mode 29:168034304 which I think is just an error of a bad Mavlink command.

Is there a better function to call for issuing the set position command either for relative or abs/coordinate? Ultimately I would like to issue set position global int, but for now I was testing with relative motion.

I am using PX4 SITL in copter as my test source. Thanks!