Default [Q] Variable when no artist in music player

Hello,

I'm searching for a variable which write "Empty Artist" when no track is playing instead of the "---".

I tried this $#TMU_ARTIST#=--?EmptyArtist$ but it doesn't work.

Thanks
NEXUS 5 BLACK 16 GB
Android KitKat 4.4.2
Kernel ElementalX-N5-0.34
Elix-R Rom | V1.03 | 04/08 | Fast | Elegant | Simple |
Nova Launcher Prime | Zooper Widget Pro | Media Utilities |
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