Hello Maha,
Happy to help!
I tested your project file and it looks like the issue was caused by the slide treating the 'End Title' and 'First Title' objects as the same object.
I added another image to replace the End Title and the interaction appears to work as designed.
For the additional captions, have you considered making lightboxes appear for the specific stages? Lightboxes are easy to use, and your learners can close them anytime to return to the main interaction and make another selection on the wheel.
For the slider to move with the wheel interaction, all you have to do is ensure that both the when and the slider use the same variable.
I've attached a corrected version of your course, as well as a version with a sample slider added to the interaction.
Let me know if you have any questions!
