Get Keypoints from Huskylens V2 on Raspberry Pi

I have a Huskylens V2 connected to a Raspberry Pi 5 via I2C. I run a python script. Reading blocks from Huskylens works ok, but I was never able to get Poses for faces. Even for pretrained poses with displaying the blue frame with ID on the back monitor, I am only able to read standard blocks with the correct ID, but not poses including the keypoint data. Is it not possible to read faces, poses or hands with keypoints or am I doing something wrong?