Drivingschool problem

[ertlflorian1]

This code only work when only one player is makeing the exam? How i can fix that i have no idea?

function lizacheck (player, name) 
    local money = getPlayerMoney (player) 
    if (getElementData (player, "A") ~= 0) then 
        outputChatBox ("Du hast diese Lizenz bereits!", player, 255,0,0) 
    elseif (money < 1500) then 
        outputChatBox ("Du hast zu wenig Geld", player, 255,0,0) 
        else 
        local int = getFreeDimension (player) 
            setElementInterior (player, 0) 
            setElementDimension (player, int) 
            local car = createVehicle (445,-2159.8,292.6,34.7) 
            setElementData (car, "Fahrschule", "true") 
            setElementPosition (player, -2159.8,292.6,34.7) 
            marker1 = createMarker (m1x,m1y, m1z ,"checkpoint", 3, 255, 0, 0,255,player) 
            blip1 = createBlip (m1x,m1y, m1z, 0,2,255,0,0,255,0,1000000, source) 
            setElementDimension (blip1, int) 
            addEventHandler ("onPlayerMarkerHit", player, onHitMarker1) 
            setElementDimension (marker1, int) 
            setElementDimension (car, int) 
            warpPedIntoVehicle (player, car) 
            setElementData (player, "int", int) 
            triggerClientEvent (player, "closeRathausGUI", player) 
            addEventHandler ("onPlayerVehicleExit", player, ifPlayerWantsToExit) 
    end 
end 
addEventHandler ("lizae", root, lizacheck) 
  
  
function onHitMarker1 () 
    local int = getElementData (source, "int") 
        destroyElement (blip1) 
        destroyElement (marker1) 
    marker2 = createMarker (m2x,m2y, m2z ,"checkpoint", 3, 255, 0, 0, 255,source) 
--addEventHandler ("onPlayerMarkerHit", source, onHitMarker2) 
    removeEventHandler ("onPlayerMarkerHit", source, onHitMarker1) 
        blip2 = createBlip (m2x,m2y, m2z, 0,2,255,0,0,255,0,1000000, source) 
        setElementDimension (marker2, int) 
        setElementDimension (blip2, int) 
end 

[Ab-47]

Do you even have "m1x, m1y, myz" & "m2x, m2y, m2z" defined?

Use /debugscript 3 in-game and tell me if you see any bad arguments/errors.