You can set the filter expressions with a number of operators that offer you
flexibility in how you filter the property (equality or inequality, exists,
greater than, great than or equal to, less than, and less than or equal to).
We need to keep in mind the expression is going to work out from the message
context and its not going to query the database directly. So in theory you
won't have the full flexibility of database queries.
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Regards,
Saravana Kumar
http://www.biztalk247.com/v1/
http://www.digitaldeposit.net/blog