Is there a way a command can only be used when clicking in a gui?

[nTrok]

I have a skript i'm writing, and I am making it so when you right click an item generator, it will open a gui and you can upgrade the level of it, is there a way that you can run the command that upgrades it only from the gui and players cant do /upgrade1 to get a free generator?

https://pastebin.com/e00pc1iy

 

[Haruomi]

1. on place of white stained glass:
     if player's tool is white stained glass named "&fGenerator - T1":
       message "&aPlaced a Tier 1 Generator"
       set {_drop} to block above event-block
       add {_drop} to {drops1::*}
    
   on break of white stained glass:
     give player 1 white stained glass named "&fGenerator - T1"
     message "&cBroke a Tier 1 Generator"
     remove block above event-block from {drops1::*}
    
   on rightclick with paper:
     if player's tool is paper named "&a$1":
       execute console command "eco give %player% 1"
       remove paper named "&a$1" from player
    
   on right click:
     if clicked block is white stained glass:
       wait 3 ticks
       open virtual chest with 3 rows named "&fGenerator - T1" to player
       format gui slot 15 of player with barrier named "&cRemove" to run:
         close player's inventory
         remove block above event-block from {drops1::*}
         set block to air
         give player white stained glass named "&fGenerator - T1"     
       format gui slot 12 of player with yellow stained glass named "&3Upgrade" to run:
         set block to air
         if player's balance is more than or equal to 150:
           close player's inventory
           remove block above event-block from {drops1::*}
           remove 150 from player's balance
           give player yellow stained glass named "&fGenerator - T2"
           send "Upgraded Generator!"
         else:
           close player's inventory
           give player white stained glass named "&fGenerator - T1"
           send "&cYou Do Not Have Enough Money For This!"
   
    
   every 5 real seconds:
       drop 1 paper named "&a$1" at {drops1::*}
       loop {gen::*}: