I made a script, if anyone killed another player with his hunter, he will get 200$ 
but only with hunter. 
local reward = 200 
  
function kill ( ammo, killer, killerweapon, bodypart ) 
    local vehicle = getPedOccupiedVehicle ( killer ) 
    if isPedInVehicle ( killer ) and getElementModel ( vehicle ) == 425 then 
    givePlayerMoney ( source, reward ) 
            outputChatBox ("#ff8800[REWARD] #ffffffYou have killed "..getPlayerName..( source )" ..and rewarded $".. tostring ( reward ), root, 0, 255, 0, true ) 
        end 
    end 
addEventHandler ( "onPlayerWasted", getRootElement(), kill ) 
 
help please