Itemstack in GUI

Not applicable
Issue description

hi Klemmy, its me Loic the bug reporter and feature requester!

I am trying to make a super magic staff where you can add spells to it with levels, am using NBT tags for it Do you know how to use itemstack in a GUI?

I want to change an NBT of an item when you put it in a slot, and you press upgrade button, do you know some code i could use if you know? Or you could add this feature?

Issue comments

If you mean custom tags, you can use itemstack management tags and replace provided itemstack with say get itemstack from slot block.

If you mean vanilla tags, you will need custom code, ask for help on this on the forums.

Support requests are not suited for the tracker.

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