My script wont work and im not to sure why?

local color = {
r=250,
b=150,
g=130,
a=255,

}

AddEventHandler(“watermarkon”, function(CreateThread)
end)

RegisterCommand(“watermarkon”, function(src, args)

TriggerEvent(“watermarkon”)

while true do

 Citizen.Wait(5)


SetTextFont(1)
SetTextScale(0.3, 0.3)
SetTextColour(color.r, color.b, color.g, color.a)
SetTextEntry("STRING")
AddTextComponentString("NXT NETWORKS")
DrawText(0.005,0.02)
end

end)

RegisterCommand(“watermarkoff”, function(source)
while true do

CancelEvent("watermarkon", function(CreateThread)
    end)
end)