SSIS FileNameColumnName output value incorrect

In a Flat File Source in SSIS I am trying to u开发者_高级运维se the FileNameColumnName property (from Advanced Properties) to populate a field in a database. It seems quite straightforward - I simply gave it a name and mapped it to a field in my OLE DB. The problem is, however, that it DB field is populated with the letter 'C', and nothing more.

My data type is varchar.

Any ideas?

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Ooops. Sorted it out - had to change the output to Unicode (nvarchar in the OLE DB). Thanks!