BADI - tcode MASS / MM46 in IS-Retail

hi,

anybody ever used / made an enhancement using BADIs? target is to update append fields of the article master (especially table mara) using tcode MASS or MM46 (mass maintenance tool) in IS-Retail or has done something similar? the business object type would be BUS1001001.

the documentation mentions MASS_SAVE_ARTICLE_USING_BAPI but unluckily not much more.

a hint would be great.

thanks rob