Marker, help me adding a Notification

Key = 38

local coords = vector3(-1081.85, -247.98, 36.76)
local size = 2.0    -- How big do you want the marker to be
local height = 1.0    -- How high do you want the marker to be

Citizen.CreateThread(function()
    while true do
        Citizen.Wait(0)
        DrawMarker(1, coords.x, coords.y, coords.z, 0, 0, 0, 0, 0, 0, size, size, height, 0, 155, 255, 155, 0, 0, 2, 0, 0, 0, 0)
        if GetDistanceBetweenCoords(GetEntityCoords(GetPlayerPed(-1)), coords.x, coords.y, coords.z, true) < size
            if (IsControlJustPressed(1, Key)) then
                TriggerEvent("TrafficAlert")
            end
        end
    end
end)