Issues with TM1 Web CubeViewer object (http to https)

[n.santini]

Hi everyone,
I'm having issues with opening TM1 Web CubeViewer objects following the protocol transition from http to https.
As you can see in the attached picture, I get a blank box when I try to open a view using the base URL with specific parameters (Action, Type, Cube, View, AccessType, AdminHost, TM1Server) despite being able to open it when the protocol used was http and the port was 9510.

My colleagues suggested me to include the TM1SessionId parameter as well since it might be related to a security factor, but I have two problems:
1. I read from IBM documentation that in order to get the unique session id I have to use a javascript code, but I don't understand where to place that and get it in the URL;
2. We're currently using static links inserted in excel forms to open those views, so assuming that using the session id solved the problem, how would I make those links dynamic so that the TM1SessionId parameter changes for each session based on what the script generated?

I would highly appreciate if someone guided me on how to proceed to fix this issue.
Thank you in advance.