function marker()
markers1 = createMarker(-3607.1999511719,871.59997558594,55.200000762939, "checkpoint", 20, 0, 0, 0, 255)
addEventHandler ( "onClientMarkerHit", getRootElement(), maifunctions )
addEventHandler ( "onClientMarkerLeave", getRootElement(), maifunctions2 )
end

addEventHandler( "onClientResourceStart", getResourceRootElement(getThisResource()), marker )

function mainfunctions ( thePlayer )
	if source == markers1 then
	local vehicle = getPedOccupiedVehicle ( thePlayer )
        setGameSpeed(tonumber(0.1))
		setGravity ( tonumber(0.005))
		createExplosion (-3607,839.09997558594,46.599998474121,true,-1.0,false )
	end
function mainfunctions2 ( thePlayer )
	local vehicle = getPedOccupiedVehicle ( thePlayer )
        setGameSpeed(tonumber(1))
		setGravity ( tonumber(0.008))
    end
end