grouping data for a pie chart in SSRS

I have a data set that I use to build a pie chart in ssrs:

<fetch version="1.0" output-format="xml-platform" mapping="logical" distinct="false" aggregate="true">
  <entity name="account">
    <attribute name="bio_employeesworldwide" alias="TotalWorldWideEmployees" aggregate="sum" />
    <filter>
      <condition attribute="customertypecode" operator="eq" value="2" />
    </filter>
 <link-entity name="contact" from="parentcustomerid" to="accountid" alias="contact">


    <attribute name="bio_webuseraccountstatus" alias="count_bio_webuseraccountstatus" aggregate="countcolumn" />

    <attribute name="bio_webuseraccountstatus" alias="bio_webuseraccountstatusgroupby" groupby="true" />

  </link-entity>
  </entity>
</fetch>

I would like to have only 2 areas in this pie chart. One area should be all Active and the other should be everything that !="Active"

or describe in sql it would be:

Case When "Active" then "Active" else "NotActive".

How do I accomplish this with SSRS?

I've been trying to do this with group expressions for the series:

What am I doing wrong? How do I just get 2 shaded regions?

After attempting the IIF suggestion below, I am getting input string was not in a recognized format:

Following Kyle's advice, I've changed the formula to:

=
IIf(Not (IsNothing(Fields!bio_webuseraccountstatusgroupbyValue.Value) 
    OR Fields!bio_webuseraccountstatusgroupbyValue.Value="")
    ,"Active"
        , "InActive")

and the result i am getting now is still that silly error message:

Another failed attempt:

=iif(NOT IsNothing(Fields!bio_webuseraccountstatusgroupbyValue.Value),

        Switch(Fields!bio_webuseraccountstatusgroupbyValue.Value<>"InActive" 
        AND Fields!bio_webuseraccountstatusgroupbyValue.Value<>"Active", 
            "InActive", "Active")

        ,"InActive")

interestingly this time, there's only one error:

i incorrectly used a string value instead of numeric, so now it is this:

=IIF(NOT IsNothing(Fields!bio_webuseraccountstatusgroupbyValue.Value),
        SWITCH(Fields!bio_webuseraccountstatusgroupbyValue.Value <> 1
                    AND Fields!bio_webuseraccountstatusgroupbyValue.Value<>3, 
                1,
                True, 3
        ),1)

now i am getting no errors, just an incorrect pie chart:

回答1:

The syntax in your final expression is incorrect, you are missing the True part on the last statement in the SWITCH statement.

Though the logic doesn't look right to me, what this expression says is.
If the field is NULL then the value will be Inactive, otherwise if the field DOES NOT equal Inactive AND DOES NOT equal Active then the value will be Inactive, else it is Active.

=IIF(NOT IsNothing(Fields!bio_webuseraccountstatusgroupbyValue.Value),
        SWITCH(Fields!bio_webuseraccountstatusgroupbyValue.Value <> "InActive"
                    AND Fields!bio_webuseraccountstatusgroupbyValue.Value<>"Active", 
                "InActive",
                True, "Active"
        ),"InActive")

Alternative use the following expression against your Value column which contains numeric values:

=IIF(Fields!bio_webuseraccountstatusgroupbyValue.Value = 3, 3, 1)

回答2:

You want an IIf expression:

=IIf(Fields!bio_webuseraccountstatusgroupbyValue.Value = "Active", "Active", "NotActive")

You'll also want to set this to the Label property of the SeriesGroup.