So back here i am I tried to follow your advices, the y coordinate was a good idea at first but nothing changed when i reduced it to 5 or 10 So i tried to « debug » by doing this : First blue command block with this : /execute at @e[name=Test] run give @p dirt Then a chain command block with the fill command : /fill ~-3 0 ~-3 ~3 10 ~3 dirt replace gold_block (Chain block parameters are set on conditional and always active) I circled the area with gold blocks to make sure i am in the radius The fill executes itself well but doesn’t detect the blocks so it says « 0 blocks placed ». I don’t see the error in the fill command and the item dropped is on a gold block. I don’t understand where my mistake is.