About flex animation

So I was modelling on Blender a model without face pose on gmod. I went on the article ‘flex animation’ and there is a script on Valve stantard flex that I guess I’m supposed to use on my model qc. It says that there are standard shape keys (34 keys) that I need to make for the scripts to work. My question is, is there easier way by just making a few shape keys and have it work on gmod?

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