Xojo2024R3.1: Need to assign value to the cell in WebListBox using DataSource

Assuming data loaded into WebListBox using DataSource coming from SQL database:

What I want is to let the user modify the value, save the new value in the database, then just change the value in the cell without fetching the whole set of rows from database again.

Is it possible to change selected cell text value given row and column numbers without reloading the whole list from database? If possible, how to go about it?
(can’t use CellTextAt)