Setting up gimbal

Hello,

I’m having trouble with setting up my storm32 gimbal. I’ve managed to be able to control it via RCinput over mavlink using virtual channels. But I’m unable to control it from mission planner. I suspect because I’m unable to set it up in the “camera gimbal” submenu as it’s permanently greyed out. I have even tried changing my mount types but nothing un-greys it. I’m using a qiotek h743 FC.