armor problems

I have a problem, I made an armor that can fly, the question is that just having it in the inventory gives me the ability to fly (which I don't want because it breaks the balance of my mod) so I searched the forums for a solution and I found with this (https://mcreator.net/tracker/issue/47082) but it still doesn't work. I want only by having the armor equipped can I fly.

the problem would say that this is that in the post that I set to do this the GUI says that having the object in the inventory will activate the ability to fly (which I do not want) but ... is there a way that it only gives me the ability to fly by equipping armor? (and to remove the ability when I no longer have the armor obviously equipped)