How to update an integration field from another integration field

How to update an integration field from another integration field

Inside a form I have 2 integration fields of the same CRM module (Zoho CRM, Products Module).

The one integration field with name 'Integration1' gets all the 'Product Name' and the other integration field with name 'Integration2' gets all the 'Product Code'.

I would like when I select a Product from the first field then the second one to show the product code.

I think a simple Integration2 = input.Integration1 will not work