Can't Drop/Move Skript

on drop:
    if event-item is any pickaxe:
        cancel event

on inventory click:
    if clicked slot is any sword:
        cancel event
    else if clicked item is any chestplate:
        cancel event
    else if clicked item is any leggings:
        cancel event
    else if clicked item is any helmet:
        cancel event
    else if clicked item is any boots:
        cancel event