Whats the code for keybinds

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MineCraft

So this probably isnt the right forums for this xD but me and my friend want to try making a command mod (were playing on bedrock version) and we want to do something were we can make diffrent kinds of weapons ex, say if i right clicked it would give the effect of regeneration. But i cant find what the (i think its called) variable that would work for it, Like this probabaly isnt even close to the right code but, /execute right_click, effect @e health_regeneration, rm=0, r=5
i dont know what i would put in place of rightclick XD

Sorry to bother anyone, But Thanks! :)

What I have tried:

I havent tried it yet, i need more charecters so aaaaaaaaaaahhhhhhhhhhh