Using a variable inside another variable

I'm trying to use one two variable in a package with one variable feeding its value to another variable as follows:
Variable 1 = Count
Variable 2 = File_Name
Variable 1 counts up from 1;I would like to use this value as an input to Variable 2 as follows:
SELECT LOAD_FILENAME FROM DIMSTATS_FILENAME WHERE (SELECT ROW_NUMBER() OVER (Order by FILE_ID) AS RN FROM DIMSTATS_FILENAME) = #DIMSTATS_TEST.count.
How ever I am getting the following Error :
+ODI-1228: Task File_Name (Variable) fails on the target connection DDBSTAGE.
Caused By: java.sql.SQLException: [FMWGEN][SQLServer JDBC Driver][SQLServer]The multi-part identifier "#DIMSTATS_TEST.count" could not be bound.+
I have also noticed that the value of Variable 1 is not being passed to the Select statement above through SQLServer Profiler. If I hard-code the value of #DIMSTATS_TEST.count (Variable1) the query is successful.
How can I get the value of Variable 1 to be passed to Variable 2?
Could someone please help
Thanks

You did not mentioned how you are using those variable .
You need to have these variable inside a package .
It will be like
Variable 1 (Refresh) -------OK-------->Variable 2(Refresh) ------------OK-----> Some other operation .
Thanks,
Sutirtha

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