Customizing a Player Trigger

In my course, most slide have spoken text, but it could happen that the user has no audio; so I want that the user can open a layer which shows the written "spoken text".

I created a Tab “Spoken Text” above in the player; to avoid having a “button” on the slide.

I want that, when the user click on it, a layer appears on the slide with the “spoken text” written.

 

The trigger on my player is so :

 

Then on each slide with spoken text, I add a maker called “Text In”.

I create 2 states for it : Normal & Selected

Then I put a trigger in the slide :

 

When I set this on a slide and play the slide directly, it works correctly.

When I go to the next slide, set it correctly, and come back to the previous one, it doesn’t work anymore… The trigger of the player has then empty fields : “on object” and “To state”… and it doesn't work.

Here are 2 slides as example...

First goes correctly, second not.

Would anybody have an idea how to make it work ??

Nathalie