Hi!, how to keep the animated texture from MARI in the ptex format?

[Николай Струковец]

Hi!, how to keep the animated texture from MARI in the ptex format?
I have 5 frames ( http://clip2net.com/s/38L9Gjv , http://clip2net.com/s/38L9Utf )of animation, when exporting the channel there is a message http://clip2net.com/s/38Lbvfl
if I write $FRAME, there is error http://clip2net.com/s/38LcbRi , the texture saves only the first frame