VBCS + Single Select + SDP + Key Attributes

Summary:

The single-select is not returning key attribute value instead just returning the row-iteration num.

Content (required):

When I select a value in Single-Select, I want it to return the key attribute value in another read-only text-item.

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):