How to map content to offer items in Experience Decisioning?

I’m facing challenges while trying to map content to offer items in Experience Decisioning and need some clarification on the correct approach.

-> using fragments?

I attempted to use a visual fragment, but it does not appear in the list of available fragments.

When I created an expression fragment, it was listed and selectable for the offer item.

However, after applying the decision policy in the email, the fragment content is not getting rendered.

-> using custom attributes?

In documentation I observed that mapping can be done using custom attributes, but I’m unclear on:

• How exactly to configure this

• How the content gets linked and rendered in the email

-> Difference from Offer Decisioning:

In Offer Decisioning, content mapping was straightforward using representations.

In Experience Decisioning, the approach seems different.

I couldn’t find clear guidance in the documentation on how content mapping is expected to work here.

Request: Could you please clarify the correct way to map content to offer items in Experience Decisioning, and how it differs from Offer Decisioning in terms of implementation?