Populate price from Product Module to Opportunity Amount Opp. Module


Hope is well.

Can anyone advice on how to get price data from product to populate in Opportunity Amount by selecting product name?

I’ve tried this link https://suitecrm.com/forum/suitecrm-7-0-discussion/6532-populating-fields-using-a-relate-field somehow but no luck.

The issue when I Quick Repair/Rebuild after the opportunity module got an empty field.