showing description in powerdesigner

Question

I have a physical data model in powerdesigner and want to show description for every fact and dimension and their attributes in the model. Following the powerdesigner add comment column in physical data answer, I have a column shows the description but the problem is it shows ? for each character.

The descriptions in my databases are in non-English language and I want to show the original description in powerdesigner. Any help would be much appreciated.