Hi,
I am getting the following error when the report viewer loads. It only occurs if I use the expression below to hide a table row if there is no value. Any Ideas?
The Hidden expression for the tablix ‘Details9’ contains an error: Request for the permission of type 'System.Security.Permissions.SecurityPermission, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.
=IIF(Fields!SeniorMM.Value="",True,False)
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