Parameter is missing a value" error running a customized report in Microsoft Dynamics AX 2012

whenever I added new parameter to the contract may fail with the following error:

The ‘Parameter Name’ parameter is missing a value

 Solution:

Recreate the parameter in Visual Studio and set the properties as required before deploying the report

1) In AOT, expand the SSRS Reports node, expand the Reports node and locate the report.

2) Right click on the report and select Delete. This will remove all customizations to the report from the current model/layer so make sure you create a backup if you think you might want to return to them.

3) Right click on the report and select Deploy element. You should now be at the point where you did not receive this error.

4) Open the report for editing in Visual Studio and refresh the dataset. The parameter will be created under the Parameters node. 

 5) Set Allow Blank and Nullable to True.

6.)Deploy the report.