Variable based on another varable does not change at runtime

Question

Hi.
I have Foreach Loop container with a EXEC SQL task inside.
The Foreach Loop loops through a directory containing flat files and and maps the filename to a "FileName" variable.
The filenames have a datestamp in the filename that I want to extract.
Because of that I have also another variable called "FileDate" which basically is an expression with substrings based on the FileName variable. The expression works fine when evaluating.
The EXEC SQL task inside the Foreach Loop does an insert to a log table (two columns - FileName and FileDate) based on the two variables mentioned above. The trouble is, however, that only FileName is populated correctly in the table.
For example: I have 5 files with different datestamps. In the log table the FileName column is populated correctly (5 different values), but the FileDate column has the same value for all 5 rows.
Any ideas why ?
dakine

Answer 1

Hi Dakine,
Your expression works well in my test package. It’s really odd that it doesn’t work in your package. You could add a Script Task into the Foreach Loop Container to show the value of the FileDate variable in a MessageBox, and check whether its value is correct
for each loop of the container. The script is simple (select User::FileDate as ReadOnlyVariables for the Script Task):
MessageBox.Show(Dts.Variables["User::FileDate"].Value.ToString());
By the way, you can also try to recreate the package from scratch.
Regards,
Mike Yin
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