Need help with Derived Column Expression

Hi,

I have a derived column expression that "used" to work until the brilliant people sending me the data decided to change things up so I wouldn't be bored!

Data is defined in flat file connection as numeric and I took the default settings (18,0). The data dictionary defines the column with an implied decimal point, so I use the following expression to give me a new column: ISNULL(DRG_OUTLIER_AMT) ? 0 : DRG_OUTLIER_AMT / 100

This expression worked fine until they decided not to have any data in this column in the delimited file, just spaces (ex "          " instead of "0000000000"). How do I modify my derived column expression to process this new arrangement (and still keep the file file connection numeric attributes)?

Thanks for your help.

Dave