Hi
I have my Lookupfunction as defined below.
=Lookup(Cstr(Fields!TPUID_L3.Value),cstr(Fields!TaskUID.Value),Fields!Summary_Name_L2.Value,
"Summary_Tasks")
But it throws an exception when runnning the report:"The Value expression for the text box ‘Textbox6’ has a scope parameter that is not valid for a lookup function. The scope parameter must be set to a string constant that is the name of a dataset."
UIDs are unique identifier type and the resturning value is nvarchar type.
Any suggestions?