VTOL Mode Mission only go up

Good evening, everyone,
I have a problem concerning VTOL (I’m using version 4.1.7 Plane). My goal is that the VTOL makes the transition from fixed wing to multicopter mode and stays fixed in a point that is indicated to it. The problem is that when I make the transition and reach the point, the altitude does not stop rising. The parameters I have changed are as follows:

  • Q_ENABLE: 1
  • Q_OPTIONS: 41
  • Q_ASSIST_SPEED: 0
  • Q_FRAME_CLASS: 1
  • Q_FRAME_TYPE: 1
  • Q_WP_ACCEL: 300
  • Q_WP_ACCEL_Z: 200
  • Q_WP_RADIUS: 1000
  • Q_WP_SPEED_DN: 200
  • Q_WP_SPEED_UP: 350

The mission is sent using mavros, as follows:

First y send a command to do a vtol transition:
Then I send a NAV_LOITER_UNLIMITED

I try this but the vtol only go up

Thank you for your time

Does QHOVER mode work properly?