WolvSk Format Anvil GUI

[PlaycastSteffen]

command /uninviti:
    trigger:
        open an anvil gui named "Name2" to player with default text "USERNAME TO UNTRUST" and with item light blue stained glass
        
 
on close anvil gui named "Name2":
    set {_INPUT2} to event-text
    wait 1 tick
    execute player command "/plot remove %{_INPUT2}% untrust"

I was wondering how I would go about formatting the middle slot of this anvil GUI as a green glass pain that is named Submit and when clicked closes the Anvil GUI to run the "on close anvil gui" code. (Credit to: ShaneBee for this code).

 

[Efnilite]

That sets the slot, but I couldn't find a way to close the inventory.. (to close, close the inventory of player, close anvil gui, etc.)

command /uninviti:
    trigger:
        open an anvil gui named "Name2" to player with default text "USERNAME TO UNTRUST"
        format slot 1 of player with green stained glass named "Submit" to close
 
on close anvil gui named "Name2":
    set {_INPUT2} to event-text
    wait 1 tick
    execute player command "/plot remove %{_INPUT2}% untrust"