I need a little help

[kukimuki]

I need a little help for my script
So I want to make a "gamemode" and add an another "gamemode" to that first one

local marker = createMarker(2151.09692, -100.14128, 1.68205, "cylinder", 192, 203, 6)
setMarkerSize(marker, 2,5)
setMarkerColor(marker, 192, 203, 6)
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function handlePlayerMarker(hitElement)
    local elementType = getElementType(hitElement)

    setElementPosition(hitElement, 2155.25220, -1799.30273, 13.54016)
    outputChatBox("#F70000[Info] #FFFFFFBeléptél a freeroam játékmódba!", hitElement, 247, 0, 0, true)
    setGameType("Freeroam")
    setElementDimension(hitElement, 2)
end
addEventHandler("onMarkerHit", marker, handlePlayerMarker)
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function MessageByCommand(thePlayer)
  if (getElementDimension(source) == 2) then
    outputChatBox("#F70000[Info] #FFFFFFAktíváltad a DM mode-ot, így már le tudnak lőni!", thePlayer, 247, 0, 0, true)
    setElementDimension(thePlayer, 4)
    setElementPosition(thePlayer, 1877.86292, -1366.51123, 14.64062)
   end
  else
  outputChatBox("You can only use this function if you are in freeroam")
  end
end
addCommandHandler("dm", MessageByCommand)

so if someone go into my marker he get teleported to LS and change dimension to 2, but if someone in FREEROAM then he can use "dm" command to set dimension and change pos
I want to make that to "dm" command only avalaible for players in freeroam mode/dimension 2