Filter by "all" or actual value issue

I have a string parameter bound to a dataset that contains a "UNION Select
'(All)' " statement to provide the user a way to return all values instead of
just a single value.
I have other integer parameters that use this exact syntax for filtering
(ALL) and they work fine. The syntax looks like this and it doesn't work and
I have no idea why:
Expression: =Iif( Parameters!PropCode.Label = "All", True,
Fields!PropertyCode.Value = Parameters!PropCode.Label)
Operation: = Value: =True
Maybe it has to do with the "(" character? Maybe it has to do with it being
a string? Please advise how I might get past this issue.Did you try:
Iif( Parameters!PropCode.Label = "(All)", True,
Fields!PropertyCode.Value = Parameters!PropCode.Label)
'|||Yes. That was a typo. That is actually what the filter looks like. This
doesn't work.
"Jihong.Liu" wrote:
> Did you try:
> Iif( Parameters!PropCode.Label = "(All)", True,
> Fields!PropertyCode.Value = Parameters!PropCode.Label)
> '
>sql