DarkRP Hud

[AsteriskMaster]

Im trying to add a thing that shows when youre wanted and not wanted but when I put the code in nothing happens. No errors and it wont work. Heres my code.
local WantedIcon = Material("icon16/star.png")
local function isWanted()
    if localplayer:getDarkRPVar("wanted") then
        surface.SetMaterial(WantedIcon)
        surface.SetDrawColor(255, 255, 255, 255)
        surface.DrawTexturedRect(ScrW()*(390/1920), ScrW()*(1006/1920), 20, 20)
    else
        surface.SetMaterial(WantedIcon)
        surface.SetDrawColor(255, 255, 255, 70)
        surface.DrawTexturedRect(ScrW()*(390/1920), ScrW()*(1006/1920), 20, 20)
    end
end