Procedures to manage slots of inventory of the entity

Issue description

Hello,

My question is described by the title.

I want to be able to set the slots of a custom gui to the items in your hotbar. As far as I know, the only way you can do this, is by selecting each hotbar slot, and assigning the item in each one to a gui slot with the get item in main-hand of target entity block. The problem is I can't change the selected hotbar slot from the procedure.

I didn't find anything about this on the wiki.

Could this maybe be added in later versions?

Issue comments

This feature will be added in 2020.4. Closing the ticket.

[#51470] Added option to specify inventory of a custom entity and bind GUI to it
[#62332] Added entity inventory slot set/get procedures

While testing 2020.4.28114 snapshot, I can't seem to find a way to count the items of a specific inventory slot of an entity when the GUI is closed. I found the procedure blocks for the "currently open GUI", like below...

...but I can't figure out a way to get the number from the inventory slot without an open GUI. I don't know if we should have a new procedure block like the one below?

With that it would be possible to decrement the number of items in the specific slot by the following approach:

I'm sorry if I'm just being blind and can't find the right procedure block... Maybe there's another solution too.

I opened a new Ticket here #63824 for better management. Sorry for the mess.