Request for Assistance with Filtering Product Categories Based on Selected Product in Delivery

Hi there,

I've recently enhanced the deliveries input forms and data schema by adding columns for both product and product category, along with respective enumerations. Now, users are required to select values from dropdown menus for both product and product category.

Here's the challenge: each product belongs to a specific category, and I want users to only see the categories related to the selected product in the dropdown for product category. 

Could you please advise on the appropriate expression to use in the enumeration or where to specify this condition? I'm eager to implement this functionality.

Looking forward to your guidance.

Best regards,

Ankita Vishe