Help with IIf IsNothing Expression

Hi all,

I am attempting to concatenate two fields in my report i.e. [Next Contact Date] and [Next Contact Employee]

The issue is, these fields can be NULL.

1.

=Iif(Trim(Fields!EmployeeName.Value) = "", "",  Fields!EmployeeName.Value.ToString() + ": " + Format(Fields!NextContact.Value, "dd/MM/yyyy"))

2.

=Iif(IsNothing(Fields!EmployeeName.Value), "",  Fields!EmployeeName.Value.ToString() + ": " + Format(Fields!NextContact.Value, "dd/MM/yyyy"))

Both of the expressions that i have tried are returning an error:

The Value expression for the textrun ‘NextContact.Paragraphs[0].TextRuns[0]’ contains an error: Object reference not set to an instance of an object.

Any assistance appreciated.

Cheers.