Hi Ashok,
Greetings from Syncfusion support.
We checked your query. We would like to inform you that, we will update the value property after the data source has been fetched from the server. Hence the model value not updated at the initial time. So we suggest you to update the value property in dataBound or actionComplete to get rid of the reported issue. Please find the sample below.
Please check the above sample and get back to us if you need further assistance.
Regards,
Sevvandhi N