In SSRS subscription, I would like to get the type parameter before setting a value but I have no luck finding any code on how to do it. In this link http://msdn.microsoft.com/en-us/library/reportservice2006.reportingservice2006.getsubscriptionproperties(v=SQL.100).aspx only parametername and parametervalue are available. any help?

I cannot find a supported way of doing this. But in the Catalog table there is a Parameter field which contains the data type in the <Type> node. So you could get the GUID of the report from the subscription, then shred the XML in the Catalog table to get the data type - joining on the parameter name. This would be pretty easy in C#Josh Ash