Sorting Attribute Values

Hi,
my first action in this forum, I hope I gonna do fine.
As I could not find any answers to my question in the forum or the tutorials I decided to open up a new topic.

Im a pretty newbie on RapidMiner. At the moment I am working with a dataset dealing with Credit Risk (my label). The polynominal attribute (credit_risk) is seperated into:

• Do not Lend
• High
• Moderate
• Low
• Very Low

This is the order is should have, but RapidMiner sorts the values alphabetical. How can I change the order of the values? Is it possible to add any weights or parameters that get the values in the right order, from: Do not Lend to Very Low?

A helpful answer is very much appreciated.  Thanks in advance.