I'm trying to port amazing frog into garrys mod by exporting the models from unity and converting them by hand into source models. There is a trampoline model and I wanted to experiment with using vertex animations to animate bouncing on it like in the game. When I look at the bounce vertex animtion I exported and put into the qc of the model in half life model viewer the bounce animation works, in hammer and in garrys mod the animation doesn't play. Is there something I'm doing wrong?

https://i.imgur.com/7Wp8xbr.gif
https://i.imgur.com/mBj5qsj.gif
https://i.imgur.com/aEGVdcW.gifv