Can you use setSelectedIndex to un-selected a row on an aggrid?

I tried using the ag grid API to run setSelected(false) on a rowNode, but that did not update the state of the ag grid, so selectedRow was still set to something, even though visually it was no longer selected.

Also I tried setSelectedIndex('your-table-id', -1); like the AI suggested, but that didn't do anything, so wondering if there may be another way.

The use case here is that I want to open a modal whenever someone clicks on a row, which I can detect the selectedRow difference, but then when the modal closes I want to reset the selection.