skript not working

[Narratrr]

So this skript below doesn't work... can anyone tell me how to fix it or what is wrong with it because it doesnt show any errors when i reload the skript


on spawn of zombie:
    chance of 5%:
        set {_item} to leather helmet
        dye {_item} lime
        equip last spawned zombie with {_item}
    chance of 5%:
        set {_item} to leather chestplate
        dye {_item} lime
        equip last spawned zombie with {_item}
    chance of 5%:
        set {_item} to leather leggings
        dye {_item} lime
        equip last spawned zombie with {_item}
    chance of 5%:
        set {_item} to leather boots
        dye {_item} lime
        equip last spawned zombie with {_item}
    

[TheDocs_]

equip last spawned zombie's boots with {_item}