What is a condition for activate 'camera gimbal' menu?

Ground Control Software Mission Planner
1

hi im having a hard time with gimbal, because ‘camera gimbal’ slot is unactivated in the Mission Planner.

i have done anythings to connect gimbal with pixhawk 4 in the net, this is a list.

  1. change ‘MNT_TYPE’ parameter in Full Parameter (0(disabled) → 4(SToRM32 mavlink)/ there are 2 ‘types’, i did both of them, i dont know which one is effective)
  2. make a ‘servo output’ slot in mount 1 pitch, roll, yaw
  3. hardware pin connection(FMU PWM out in PM board)

what should i do to activate the menu? is there any condition for activation??

below is the condition of the drone.

  1. using pixhawk 4
  2. SToRM 32 board(gimbal board)
  3. RC2(GND/pitch/roll/yaw) pin connected
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