Greater than Equal to Functionality when retirivng data from SSAS 2008 cube using SSRS 2012 report not working

Question

I have an SSRS 2012 report and SSAS Cube in 2008. My report criterion requires filtering on measures. So Created measures as dimensions . The report requires >= functionality on the measures. But in the Query designer of 
the report there is =, IN, Within Range ,Excluding range , MDX as the operators.
To achieve my goal. I have “From” and “To” as parameters on the numeric dimension. The “To” parameter I have set as internal and setting
 the default value of  “TO” .By writing another Dataset query that returns the “MAX” 
value and the MAX value returned is a member of the measure converted to dim I confirmed.. So this whole works as >=.The user enters only the “FROM” parameter and the “TO” is set internally. The user can enter any value in the “From” parameter. Any
value that is not even a member.It is a textbox. I cannot use a list of values from the “From” parameter.
But whenever I run the report after entering all the selection criteria
 I keep getting
Error “the restrictions imposed by the constrained flag in the strtomember functions were violated”
I know this means that Max value in the “TO” section is not a member .
I did try
: StrToMember("[Fact RCS CV BLAST].[APPRLIMIT ACH].
&[" & @ToFactRCSCVBLASTAPPRLIMITACH &
"]", CONSTRAINED) )
 But I get “syntax for the “&” is incorrect”
If I use Drop down for the “From” and “To” parameters then it works fine. But that’s not what Business Users need.
Please let me know what the options to make this work. I did use parameters that filter the
 Dataset returned it works fine but there is a performance impact.

Answer 1

Hi,
I think if you use the following method you will be able to compare the members.
CDbl(StrToMember("[Fact RCS CV BLAST].[APPRLIMIT ACH].&[" + @ToFactRCSCVBLASTAPPRLIMITACH + "]").Member_Name)
As you mentioned that you converted your measures as dimensions, you are having an integer value as the member name. In that case use VBA functions with MDX to do the datatype conversion.
Take a look into the following MDX written against Adventure Works;
WITH CALCULATED MEMBER [Measures].[Member Name] AS
CInt
Right
CStr
[Date].[Calendar Year].CURRENTMEMBER.MEMBER_NAME
), 4
SELECT {[Measures].[Sales Amount], [Measures].[Member Name]} ON COLUMNS,
FILTER
[Date].[Calendar Year].[Calendar Year].MEMBERS,
CInt(Right(CStr([Date].[Calendar Year].CURRENTMEMBER.MEMBER_NAME), 4)) >= 2005 AND
CInt(Right(CStr([Date].[Calendar Year].CURRENTMEMBER.MEMBER_NAME), 4)) <=2008
} ON ROWS
FROM [Adventure Works]
I am filtering the Years by using the member names by extracting the Integer portion of the member name and applying data type conversion functions in VBA. So I 
Keep in mind that you have to get rid of the CONSTRAINED clause if your business users can enter anything on the SSRS text box.