Category filtering

We are using the WPDM directory addon and want to filter to have only certain categories, below is the shortcode im using butits not filtering jsut those categories, thanks

[wpdm_archive_filter items_per_page=”9″ template=”link-template-default” cols=1 categories=”vsi-diagrams,obsolete-product-owner-manuals,technical-bulletins,vehicle-wiring-diagrams”]

Thanks very much,that works for one category. How would I allow it for multiple categories, thanks

Thanks Im using that with multiple slugs but its still pulling through other categories?

Appologies, please try again. thanks

Ok thanks. How would one go about showing selective downloads for certain catgories. Is there another shortcode method or would the pro version provide this option? thanks