Reg: Display of variable added in one Instance across other instances

We have the hierarchy as given below,

Group template

   - Ruleset template

            - Rule template

            - Variable template

I have put the value holder (linked to variable template) in group template as entity placeholder.

We have defined one parameter in ruleset as "parm1" which is further being used to place the identity of variable defined through variable template.

This has resolved our problem of displaying variable (defind in variable template) across multiple instances of group template. But while compiling it is giving an error as "parm1 is not in scope". And as a restriction we can not even define parameter at Group template level.

could you please provide some input on this?

regards,

Archu