[WS] Beatport.com by stevehero [Release, Single Track & Artwork tagging]

Hello.

I need a little help over here, please.
I want the Artist AND the Mixartist together in the ARTIST Tag, seperated by comma.

For now it works like this:

outputto "ARTIST" # ARTIST
sayregexp "(?<=,\"artistName\":\")[^\"]+" ", " "<<endTrack>>"
say ", "
sayregexp "(?<=,\"remixerName\":\")[^\"]+" ", " "<<endTrack>>"

say "|"

But how can I tell him, to set the comma only if there IS a mixartist?

Would be glad to get your help.

Greetz, skrippi