Perspective table JSON FORMAT, expression syntax to get selected row ID

Hi, I have Perspective table, data populated by a named query in JSON FORMAT. I need to know expression syntax to get selected row ID.

Do you mean:

{../path.to.table.props.selection.selectedRow}

Yes, I want to get value from ID column.

Should be something like:

{../path.to.table.props.selection.data[0].ID}

that works well. Thanks.