Help integrating external portal captive on Huawei Air Controller

I have a external portal captive, that works on a SSID managed by my Huawei Air controller, the ssid config its Open+Portal, and the user has to login on portal to get internet access, but i am getting problems sending the params to the controller to make the auth, the portal works for me on the mikrotik, and i know about html/js, but dont know how end config on the huawei for request user login. Also end config accounting