Parameters not being passed to stored procedure after upgrading

[Pooja]

I had an old Silverlight Project which I am trying to upgrade.
I did upgrade the reports using the Upgrade Wizard from Telerik.
Now I am using HTML Report Viewer to display the reports. 
The report and parameters are being set from the client side using java script for which I followed  https://docs.telerik.com/reporting/html5-report-viewer-howto-custom-parameters 
I can see the parameters being passed from the console and in the report viewer but the parameters are not being received by the Stored Procedure. The stored procedure gets the parameter values as NULL. 

Unable to figure out why it is happening like this. 

Thanks

[Nasko]

Hi Pooja,

First test if the parameter values are sent successfully to the report by displaying them inside the report. Then make sure that the stored procedure is configured to receive the parameter values by going through the data source wizard steps. The data source parameters should be connected to the report parameters via corresponding expressions. If the issue persists, please send us the report definition for review.

Regards,
Nasko
Progress Telerik