Grid from Record Data: Indexing out of Grid Selection

Hello,

I'm displaying a selectable read-only grid on an interface, and the grid is sourced from a record type (entity-backed).  Based on what row the user selects, I want to use various fields from that row elsewhere.

I.e.,

a!gridField(
...
selectable:true,
selectionValue:local!mySelection,
selectionSaveInto: {
        a!save(local!selectedRow, index(fv!selectedRows, length(fv!selectedRows), null)),
        a!save(local!mySelection, index(save!value, length(save!value), null))
      }
)

My local!selectedRow looks great.  But, when I try to reference this elsewhere, like:

local!myselectedRow.name

I get an error: "must be indexed by its corresponding record type fields or relationship".

How can I index this as if it were a CDT? (which...since it is an entity-backed record, I would think I can treat it as a CDT of that entity type).

My only workaround is to do a cast() within my saveInto, but I hope there is a cleaner way.

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