What do you mean? What’s preventing you from using it? 

I want to know how to link action with aximmetry .

Via blueprints (like anything else), if you wan to trigger an action from inside Aximmetry, for example using GetAximmetryTrigger. If you need to send lots of data from Aximmetry you might want to package that as a json array in Aximmetry and parse that in Unreal.