ShowAdmins = true

function toggleAdminList()
	if ShowAdmins then
		ShowAdmins = false
	else
		showAdmins = true
	end
end

toggleAdminList()

concommand.Add("show_admin", function()
	toggleAdminList()
end)

hook.Add("HUDPaint", "toggleAdminList", function()
	if ShowAdmins then
		for k, v in pairs(player.GetAll()) do
			if v:IsAdmin() or v:IsSuperAdmin() then
					adminList = adminList .. ", " .. v:Nick() // use .. to concat strings
			end
		end


			if (adminList != "") then
				adminList = string.sub(adminList, 3, string.len(adminList))
				draw.SimpleText("Admins: "..adminList, ScrW() * 0.8, ScrH() * 0.2, Color(0, 255, 0, 200), 1, 1)
			else
				draw.SimpleText("No admins online!", ScrW() * 0.8, ScrH() * 0.2, Color(255, 0, 0, 200), 1, 1)
			end
		end
	end)