Using iif inside a lookupset to change expression result

Hey all, I've got an expression that is currently using a lookupset to pull data from a different dataset. I also need to replace the output of my expression with certain values, but I'm unable to figure out exactly what syntax I need for my iif statement
within this lookupset. The current expression I have is returning me the value that I'm trying to change, so I've got that far. My expression looks like this:
=Join(LookupSet(Fields!Team.Value, Fields!Team.Value, Fields!ID_Average.Value, "GlobalRating") ,iif(Fields!ID_Average.Value = 4, "Very Good", "NONE"))
This will return the value that I'm trying to replace with my string. Any help in getting my syntax would be greatly appreciated.
Thanks,
Bryan
Sorry not quite clear how you want the output to come
As I see you're using an expression for delimiter argument which doesnt seem correct. LookupSet returns you an array. Didnt understand how you want array to get returned
Can you show a data sample and explain?
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IIF, BITAND & Logical AND in SSRS Expressions

I have had some interesting times using IIF to display "X" when a bit is a word is true and "" when it is not. I THINK I understand it all now but would appreciate comments from anyone else to confirm that my understanding
is correct.
I was using, for example, the integer 8 as a bit mask to test for bit 3. In most programming language that I am familiar with, to test whether bit 3 is set in an integer X the test is "X and 8 = 8", looking for this to
be true.
In SSRS I tried =iif(x AND 8 = 8,"X","")
but this always returned true. I then tried =iif((x AND 8) = 8,"X","") and that seemed to work as expected.
My conclusion is that "AND" can be interpreted as either a
Bitwise AND or a Logical AND depending on the context. In the first case I assume that "X" was evaluating as TRUE as was "8 = 8" so the result was always true. In the second case I had forced a
Bitwise AND by using brackets to indicate precedence and got the result that I expected.
This brings be to a second point. I have the impression that when presented with a numeric result (rather than 1/0 or TRUE/FALSE) IIF interprets 0 as false and any value greater than 0 as true.
I say this because iif(x and 8, "X", "")
also seemed to work even though the result should be either 8 if bit 3 not set and 0 if it is not.
This is an example of and Excel function that does the same thing.
Option Explicit
Public Function BITAND(x As Long, y As Long)
    Dim z As Long
    Dim result As String
    z = x And y
    If z = y Then
        result = "X"
    Else
        result = ""
    End If
    BITAND = result
End Function
R Campbell

Yes your understanding is correct
This is from MSDN docuentation
Logical and Bitwise
Logical and bitwise operators perform logical manipulations between two integer terms in an expression.
Operator
Description
And
Performs a logical conjunction on two Boolean expressions, or bitwise conjunction on two numeric expressions.
see
http://msdn.microsoft.com/en-IN/library/dd255271.aspx
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What is use of AT NEW and AT CHANGE

what is use of AT NEW and AT CHANGE

Using AT NEW
Use at new to detect a change in a column from one loop pass to the next. This statements enable you to execute code at the beginning of a group of records.
Syntax for the at new Statement
sort by c.
loop at it.
    at new c.
     endat.
    endloop.
where:
it is an internal table.
c is a component of it.
The following points apply:
This statements can only be used within loop at; it cannot be used within select.
at new does not have to come before at end of. It can appear in any order.
This statement can appear multiple times within the same loop. For example, you could have two at new and three at end of statements within one loop and they can appear in any order.
These statements should not be nested inside of one another (that is, at end of should not be placed inside of at new / endat).
There are no additions to these statements.
Each time the value of c changes, the lines of code between at new and endat are executed. This block is also executed during the first loop pass or if any fields to the left of c change. Between at and endat, the numeric fields to the right of c are set to zero. The non-numeric fields are filled with asterisks (*). If there are multiple occurrences of at new, they are all executed. at end of behaves in a similar fashion.
A control level is the component named on a control break statement; it regulates the control break. For example, in the following code snippet, f2 is a control level because it appears on the at new statement.
loop at it.
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        "(some code here)
        endat.
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It is said that a control break is triggered if the control level changes. This means that when the contents of the control level change, the code between the at and endat is executed.
A control break is also triggered if any of the fields prior to the control level in the structure change. Therefore, you should define the internal table structure to begin with the fields that form your control levels. You must also sort by all fields prior to and including c.
Between at and endat, numeric fields to the right of the control level will be zero and non-numeric fields will be filled with asterisks.
Using ON CHANGE OF
Another statement you can use to perform control break processing is on change of. It behaves in a manner similar to at new.
Syntax for the on change of Statement
The following is the syntax for the on change of statement.
on change of v1 or v2 .
else.
endon.
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any number of or conditions might follow.
The following points apply:
If the value of any of the variables (v1, v2, and so on) changes from one test to the next, the statements following on change of are executed.
If no change is detected and else is specified, the statements following else are executed.
on change of differs from at new in the following respects:
It can be used in any loop construct, not just loop at. For example, it can be used within select and endselect, do and enddo, or while and endwhile, as well as inside get events.
A single on change of can be triggered by a change within one or more fields named after of and separated by or. These fields can be elementary fields or field strings. If you are within a loop, these fields do not have to belong to the loop.
When used within a loop, a change in a field to the left of the control level does not trigger a control break.
When used within a loop, fields to the right still contain their original values; they are not changed to contain zeros or asterisks.
You can use else between on change of and endon.
You can use it with loop at it where . . ..
You can use sum with on change of. It sums all numeric fields except the one(s) named after of.
Any values changed within on change of remain changed after endon. The contents of the header line are not restored as they are for at and endat.
When a loop begins execution, the system creates a global auxiliary field for each field named in an on change of statement contained by the loop. On creation, these fields are given default initial values (blanks or zeros). They are freed when the loop ends.
Each time on change of is executed, the contents of its fields are compared with the contents of the global auxiliary fields. If they are different, the on change of is triggered and the auxiliary fields are updated with the new values. If they are the same, the code within on change of is not executed
Because global auxiliary fields do not exist outside a loop, you cannot use on change of outside of a loop.
I hope it helps.
Best Regards,
Vibha
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Using iif inside a lookupset to change expression result

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