Face Rig isn´t workin in a modified Metahuman face

Hi. I exported the face of a Metahuman to Blender to make some modifications, as shown below:


I just pushed some faces in. Back to Unreal, when I put the Metahuman inside the Level Sequence, I noted that only the body rig became available. Then, I added the Face Component and the Face_ControlBoard_CtrlRig. But the rig is not responding:

What´s the correct way to do something like that?