Google Maps Plugin - Network Tag Question

Hi

With the awesome wpmudev maps plugin you can filter network wide posts with the Query="tag=xyz" shortcode option.

I am starting to get the unusual occurrence of where I only want to show posts of 2 tags on a map.

Not of just 1 tag, but where a post has been tagged under 2.

Is this possible?

Query="tag=xyz,abc"

Cheers

Johnny