Hello,
I am core AS3 programmer, these days converting legacy browser based flash content to HTML5. Please check my reviews and feedback, my recent work all had been converting to HTML5 from Flash.
Regarding the project, the conversion you have applied within the Animate CC will only convert to HTML5 compatible/standard. It is unable to convert the code as there is no direct syntax conversion from Actionscript to Javascript. The good part of having flash developer on these project is they can read all the Actionscript code clearly and implement exact alternatives on the project rather than absorbing the knowledge by looking the application. I have seen the project, it has not only simple flash content but also short audio player. I think this is perfect project for me.
Let me know if you have any questions.
Regards