Not able to get selected rows of expandable rows

Hi,

I'm using the expandable UI grid option with selection option for both parent row and subgrid.

I'm able to get the selected row on click of a button when the parent row is selected through getSelectedRows() function.

If I select a row from subgrid, I'm not able to get that selected row and I'm not able to find any solution for that.

It would be great if you can provide a solution for this issue or redirect me to the solution if there is already one.

Thanks for the help in advance.