Class descriptions are not populated using BAPI_CLASS_CREATE

Hi i created classes using BAPI_CLASS_CREATE

When i goto CL02 tcode and trying to display my created class, i found the class description field(which is mandatory) is empty.

In the bapi iam passing the catchword value...but it is for keywords.

So how to populate the value in class description field when using this BAPI BAPI_CLASS_CREATE?

Plz help me..ASAP

Thanks