Changing parameters of elements in Model Groups

I know it’s a old topic but I’m dealing with setting instance parameters for elements inside model group. On the second post Ben wrote “If I were just changing instance text parameters, I could work around the group problem”. The way I found to do this is creating a shared parameter and assign it as a project parameter set to “can vary by group instances” and using it in Dynamo. Is this the only work around or is there a better one?

Gustavo