Get Selected Record Ids from current Grid in Canvas App Smart Button Dialog

[vikashkumar669]

I am trying to implement a new Ribbon dialog button that will display the record ids of the currently selected items in the grid.
I can only access the id of the first record selected using the code from your article

Set(varRecordId, If(
IsBlank(Param("recordId")),
GUID("780bb51e-961e-ea11-a810-000d3ab39933"),
GUID(Param("recordId"))
));

Ref: #58