how to get the dynamic data from custom source

i have struck up with getting the dynamic data from custom source.


1.I have created the service and hosted in server machine. 

2.I have configured the custom source with spotfire web client

3.i have assigend the data into the datatable and i have able to see the datas in the web browser also.

4.But ,when i chaning the data in the source and again refreshed the web page ,it doen't change the values in the table and chart controls.


if anybody knows these kind issues ,pls assit me to resolve the same..