Product filed not filled automatically once "related to" filed contact is chosen (ZOHO CASES)

Product filed not filled automatically once "related to" filed contact is chosen (ZOHO CASES)

Hi,

I have contacts which has a single product related to each one of them.
Once i'm filling up the "related to" contact name - some fields values are automatically gathered from the contact (phone, email, etc.) - but the product value doesn't.

Anyone knows a way to ensure that the product field value will be automatically gathered from the contact info just line the other fields does ?

THANKS !!!