Get item from armor block

I am trying to create a mod in which when the player puts on a helmet, they are able to earn experience points for that helmet which gains them certain benefits. To do this, I need to be able to detect when the player has the helmet on and when they have taken it off.

After some look around, I've found that I need a block called "get item from armor slot". 

I'm using MCreator 2021.1 and I have scoured the procedures blocks and can't find it. I believe it's been taken out of the newest version of MCreator.

Help...