Changing Category selection via Scripting

Hello,
Need some help with scripting, any help will be greatly appreciated.

The issue is when a user changes a selection on the category to view data in one matrix, when the user goes to another table he has to change the category selection again to view data for that matrix.

We have a model that uses the same category tiles across multiple matrix tables. What I would like to do is create a canvas where we can use that same category and somehow have it change all other tables in the model to that very same selection via scripting. Is there any groovy language/scripting code already available to use?