Hi Hussain,
Thanks for contacting Syncfusion support.
We have analyzed your query and we suspect that you want to update only a single column value in Grid dataSource. By default, two way binding support for the addition, deletion and updating whole collection of data. So, if you want to update a single column value then you need to update the whole Json data to Grid. Single column value is not get update in the Grid UI. We suggest you to update whole dataSource to the Grid.
Regards,
Thavasianand S.