Get/Set Material Description

Hi,

Does anyone know how to Get/Set material description shown in image below of "Edit Material" property of part. If "YES", I want to use it in assembly BOM. Can it be directly linked with custom property. I know, I can create a macro to add value in custom property if I get the description value, but I wanted to know is there any direct method to do that.

SolidworksApi macros