How I can pass the data from the custom html form to the hubspot form on the form submit
Hi @LUplers,
Thank you for reaching out to the Community!
I found for you these similar posts that might be of interest:
- Submit data to a form
- The posts from @jackcoldrick on this thread “Send external form data to hubspot”
- The posts from @Derek_Gervais on this thread “Passing custom form data to a hubSpot form in hidden field”
I also wanted to invite a couple of subject matter experts to this conversation @Teun, @ChrisoKlepke and @DanielJeal do you have suggestions to help @LUplers, please?.
If anybody else has anything to add and/or share, please feel free to join in the conversation 
Thanks and have a great day!
Best,
Bérangère