I entered this:
addMissionEventHandler [ "Draw3D", { alphaText = linearConversion[10, 35, player distance CharlieArrow, 1, 0, true]; drawIcon3D ["", [0,255,4,alphaText], CharlieArrow modelToWorld[0,0,1.25], 0, 0, 0, "Charlie", 0, 0.05]; } ];
And I received this: