After you capture the file, add a Mathematical expression task to convert the name to upper case (yes, this task can be used for non-math related expressions as well!). In the properties of that task, set the expression to
ucase("%o") and store the results in
%9. Then, use a standard condition (instead of a filename condition) to check the contents of
%9.
Alternatively, add a script
as a condition immediately after ytou capture the file so you can achieve the same thing in a single task. The script would simply contain the following line:
Script.returnvalue = instr(ucase(Watch.ExpandString("%o")),".CSV")>0
Hope that helps,