Multilingual Closed Captions to one video (audio)

I was assigned to translate a spoken video with subtitles. Therefore i used YouTube to transcribe the audio to text. Imported this text into a Captivate 9 project.

What i want to achieve:

I want to create an interactive PDF in captivate with a menu that assigns translated subtitles (closed captions) to the same video. A user selects French, German, Dutch or whatever and the video starts with the selected subttles.

My starting point was

1. to add a video, separated in video and audio on a slide,
2. attach closed captions to the audio, 
3. make it visible throughout the whole project and
4. add slides per language.
5. add (copy) the audio file per language

This seems not the way to go as my Closed Captions are automatically synced the audio Always: If i change the CC on a slide it will be changed everywhere...

Tried an alternative:

1. add a video with audio included and cc added on a first slide
2. add additional slides per language
3. add the same video from the library (avoid to get too big project)
4. add an empty audio file with the same length

Also not the way, when the slide (lets say Dutch) is selected theslide with the cc starts...but not the video. I have to use a multislide video in order to sync it with the project timing. When i pause the slide on enter, you can start the slide but the video doesn't start with the same click...

Before i continue to find workaround after workaround i call on all of you guru's out here: Is there a quicker way? Is there another way? Am i on the right track with these methods i tried?

Thanks!

Peter