Isuue with Date match

I think I found an issue with the new Dat Match functionality. I try to explain is as clear as possible
When i create a rule I seraching for a dat like januari 2013.
When there is a match found in the document....and there is....i rename the file to 201301_filenam.pdf
The result action of the rename step is that it is always returning the current month 201306_filenam.pdf.
And of course this is not want i want.
Am I doing something wrong?

When i create a rule I seraching for a dat like januari 2013.
When there is a match found in the document....and there is....i rename the file to 201301_filenam.pdf
The result action of the rename step is that it is always returning the current month 201306_filenam.pdf.
And of course this is not want i want.
Am I doing something wrong?