APM client-initiated form SSO with OpenProjects.

Hi,

We have an OpeProject application, i need to use APM with SSO with it,

the login form has some dynamic hidden parameters which needs to be sent with the SSO form.

{ authenticity_toke & utf8 }

How to append those hidden dynamic parameters in SSO form and how to fetch their values from the server response and assign session variables for them?

appreciate your support.