Category and Tag Shortcode

Hi, I need some help with a shortcode for tag fitering within a category. We want to show parent categories but with the ability to then show only specific products based on tags.
My starting point is:
[product_categories number=”0″ parent=”0″ products_tag=”esprit” tag_operator=”in”]

This shows the parent categories as desired but all products regardsless of tags.

Any help would be great – Thanks

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