Here is what I am finding from using this....
In the template itself, you can only input predefined strings that will not change (like your company's address), not auto text. So, if I put "=Title" in the actual template, it does not really become part of the template or it is just not recognize the auto string because the template does not share the same parent as your project. Instead, you have to manually put the auto string on each sheet's parameter.
Does that should right?
Edit: OK....so I just restarted Altium and everything populated correctly.....weird. The original question does not seem possible, but at least the rest of it is working.
Thanks!