Hi there,
Hmm I'm not sure I understand what you're trying to do. It sounds like you're trying to implement SSO for Kibana, but I'm not sure what you mean by "HTML WebSSO", and I'm not sure what you're trying to do with the code you pasted. Could you please clarify what you mean by "HTML WebSSO", and elaborate more on what you're trying to do with your code and where you're running into problems with it?
In terms of using SSO with Kibana, here are a couple threads which cover the topic:
Please let me know if this helps!
Thanks,
CJ