Adding Artist In Featured To Artist Tag

I want a action that adds the artist in the "(feat.)" to the Artist tag. For Example:

Title: Rap Song (feat. Wyclef Jean)
Artist: Black Eyes Peas

After Action

Title: Rap Song (feat. Wyclef Jean)
Artist: Black Eyes Peas, Wyclef Jean

Also

Title: Only (feat. Drake, Lil Wayne & Chris Brown)
Artist: Nicki Minaj

After Action

Title: Only (feat. Drake, Lil Wayne & Chris Brown)
Artist: Nicki Minaj, Drake, Lil Wayne, Chris Brown

Hopefully you can help me!

Isn't this something similar to this problem:

only with other fields?

Lol yeah it is similar just the other way around.

Any updates? Or is this not possible

I would have thought that if it is

that it should not be too difficult to adapt the action(s) that are already known to you.
And if you have difficulties, the describe what you have done, what you expected and what the result actdually was.

I tried to take the action from the other one and just switch the fields (title and artist) it did not work…what is the solution?

You could try an action of the type "Format value" for ARTIST
Format string: %artist%, $regexp($regexp(%title%,'.*feat\. (.*)\)',$1),'(.*), (.*)',$1 & $2)