local ui_get, ui_set = ui.get, ui.set
local ui_new_checkbox = ui.new_checkbox

local custom_chrome_chams = ui.new_checkbox("aa", "other", "Custom Chrome Chams")

    if userid == nil then
    return end
    if not ui_get(custom_chrome_chams) then
	client.exec(r_showenvcubemap 1)
    return
    end

end
client.set_event_callback("round_start", on_round_start)