How to send LANDING_TARGET mavlink message to PX4?

Hi, I’ve been struggling with this for a while. I thought I found the answer with the mav_connection.mav.landing_target_send() command, but this doesn’t work and I’m guessing because it formats the message for ardupilot since PX4 seems to use a different set of variables. Does anyone know what python statemetn will send a LANDING_TARGET message to a PX4 flight controller?

It would be much appreciated