Nested IIF() expression error

[lanm]

=IIF(
Fields!Start_Date.Value = cstr("01/01/1900"), "X",
IIF(
isdbnull(Fields!Start_Date.Value),"X",""))

Basically, I have to check for a smalldatetime field, and if it's "01/01/1900" or <NULL>, then the textbox has to have a value of "X" to let the user know they need to fill it in!

Thanks!

 

[lanm]

Well, of course the following is now working:

=IIF(
Fields!Start_Date.Value = cstr("01/01/1900"), "X",
(
IIF(
isdbnull(Fields!Start_Date.Value),"X","")
)
)