command /pvp [<text>]:
    permission: pvp.*
    permission message: &cNie posiadasz permisji &2pvp.*
    trigger:  
        if arg is "on":   
            set {pvp} to true       
            broadcast "&2Pvp zostalo wlaczone"  
        else if arg is "off":        
            set {pvp} to false    
            broadcast "&4Pvp zostalo wylaczone"
on damage:  
    if {pvp} is false:  
       if victim is player: 
           cancel event    
                send "&3Admin musi wlaczyc pvp!" To attacker