on mine of stone or cobblestone:
    if {cobble::%player%} is false:
        cancel event
        
command /cobble [<text>]:
    permission: brix.cobble
    permission message: &cNie ma tak latwo
    trigger:
        if arg-1 is not set:
            send "&cPoprawne użycie /cobble on/off" to sender
        if arg-1 is "on":
            set {cobble::%player%} to true
        if arg-2 is "off":
            set {cobble::%player%} to true
            
          
on first join:
    set {cobble::%player%} to true
    
on join:
    if {cobble::%player%} is not set:
        set {cobble::%player%} to true