My custom PXR_HandPose is not detected (no responses)

I am working on Unity project ver 2021.3.34f1 for a VR game on Pico 4. I do the hand tracking and generated two custom hand poses which are thumb up and okay poses. I also created Hand Pose Start () and End () events to make sure my generated hand poses are working properly. However, only the thumb up pose can trigger the events while okay pose did not give any response. Does anyone face this kind of issue before or perhaps have an idea on how to solve it?