how to make marker invisibe

[HealthDown]

the name says it all

[JR10]

There is an argument for it, Alpha in createMarker.

[myonlake]

And if you didn't understand it, it's this:

createMarker(x, y, z, "cylinder", size, red, green, blue, alpha) -- Put alpha as 0 to put it as invisible marker 

[Cadu12]

or https://wiki.multitheftauto.com/wiki/SetMarkerColor