#error in my ssrs report?

Try this............
=IIF(Fields!Manager.value.equals("Yes") OR Fields!Country.value.equals("USA"),
IIF(IsNothing(Fields!OrderDate.value.equals("Yes"))," ",Format(Fields!OrderDate.value,"MM/dd/yy")), "N/A")
If the format does not work then you will need to add CDate to the Date.

I am sorry I wrote this incorrectly. It should be
=iif(Fields!Manager.value.equals("Yes") OR Fields!Country.value.equals("USA"),
iif(Isnothing(Fields!OrderDate.value,"",                                   <===
Month(Fields!OrderDate.value) & "/" & day(Fields!OrderDate.value) & "/" & mid(year(Fields!OrderDate.value),3,2)),
"N/A")

Also I am still getting the #error when manager= no and country=null

Please paste the code into yours the same way

=IIF(Trim(Fields!Manager.value)="Yes" OR Trim(Fields!Country.value)="USA",
IIF(Trim(Fields!OrderDate.value)="","",Format(Fields!OrderDate.value,"MM/dd/yy").ToString),"N/A")
 
Make sure you are using a string OR date field for the OrderDate.IT does make a differents.

The orderDate is a datetime field in my sql table.
I tried the trim() but still the same error.

I think this is really anointing for a simple null value field.

I found this from MS sit.  Is there any work around other than using the code section method.

#Error is coming form the null value of Country field.


This is from the MS knowledge base:
Suppressing Null or Zero Values at Run Time
Some values in an expression can evaluate to null or undefined at report processing time. This can create run-time errors that result in #Error displaying in the text box instead of the evaluated expression. The IIF function is particularly sensitive to this behavior because, unlike an If-Then-Else statement, each part of the IIF statement is evaluated (including function calls) before being passed to the routine that tests for true or false. The statement =IIF(Fields!Sales.Value is NOTHING, 0, Fields!Sales.Value) generates #Error in the rendered report if Fields!Sales.Value is NOTHING.

To avoid this condition, use one of the following strategies:

•Set the numerator to 0 and the denominator to 1 if the value for field B is 0 or undefined; otherwise, set the numerator to the value for field A and the denominator to the value for field B.

Copy=IIF(Field!B.Value=0, 0, Field!A.Value / IIF(Field!B.Value =0, 1, Field!B.Value))

Oh gee.
Why didn't I think of that?

I believe that will work. Just too focused to work in SSRS report.
I appreciated sticking around to answer my questions.
Thanks much.

Glad that I could help in someway.