Using a Variable Prompt - In an analysis using Top N filter (URGENT)

Hi Experts
I have created a variable prompt that is setup in the following way :
Prompt Name : Number_of_rows
User Input : Radio Buttons
Radio Button Values : *1/ 2* (Custom Values)
Variable Data Type : Number
Default Selection : *1* (Specific Custom Value)
I have an analysis/ report that has the following columns Customer ID | Number of Orders
I have applied a top N filter to this report using the varibale prompt :
*Number of Orders is in top @{Number_of_rows}* (which is equivelent to Number of Orders is in top 1 or 2)
However when I view the report im getting the following error
View Display Error
Error getting drill information: SELECT "Customer"."Customer ID" saw_0, "Sales Facts"."Number of Orders" saw_1 FROM "Sales" WHERE TOPN("Sales Facts"."Number of Orders",Number_of_rows) <= Number_of_rows
Error Details
Error Codes: YQCO4T56:OPR4ONWY:U9IM8TAC:OI2DL65P
Location: saw.views.evc.activate, saw.httpserver.processrequest, saw.rpc.server.responder, saw.rpc.server, saw.rpc.server.handleConnection, saw.rpc.server.dispatch, saw.threadpool, saw.threadpool, saw.threads
Odbc driver returned an error (SQLExecDirectW).
State: HY000. Code: 10058. [NQODBC] [SQL_STATE: HY000] [nQSError: 10058] A general error has occurred. [nQSError: 43113] Message returned from OBIS. [nQSError: 27005] Unresolved column: "Number_of_rows". (HY000)
SQL Issued: {call NQSGetLevelDrillability('SELECT "Customer"."Customer ID" saw_0, "Sales Facts"."Number of Orders" saw_1 FROM "Sales" WHERE TOPN("Sales Facts"."Number of Orders",Number_of_rows) <= Number_of_rows')}
Please can you help
Kind Regards
Hiten
Edited by: #:::HITEN:::# on 29-Nov-2012 04:24

I'll put this as below
My prompt will have the TopN which can be formated by TopN Orders and setting this as Presentation variable as N
SELECT TOPN("#Sales",10) FROM "SA" order by Product
In the report I'm using same column (Orders) with expression as below.
TOPN("#Sales", cast(@{N}{2} as int))
If this is not helpful for you then try to pass some default value for the Presentation variable

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