Help with toggle Captions and Sound

I need help with custom caption and sound control buttons in a slide presentation. Here's my current setup and issue:

Current Implementation:

• Created two custom buttons to control captions and sound instead of using default player controls
• The caption button uses a toggle trigger and state change
• The sound button uses JavaScript code from NRZ

Problem:

1. The controls work correctly within a single slide
2. However, when I change slides, the button states don't persist:
   • If I turn off a control in one slide
   • On the next slide, the button doesn't show the correct 'off' state
   • After this, the button symbols become reversed (off symbol acts as on, and vice versa)

Additional Notes:

• I don't want to put these controls in the Slide Master since they're not needed on all slides
• I tried implementing them in the Slide Master but couldn't get them to work there either

Can someone help me fix the button state persistence across slides?