Can not change face

Hello! In my GMod can not change a TF2 model’s face. Choose Face Poser, click on the appropriate model, near the head appears a circle, begin to change the face, but nothing changed. On models from HL2 fine. What is the problem and how to solve it?

If your model detail settings are too low in the advanced video options, facial expressions won’t work on any models including TF2 models.