BAPI - Material save Data

Hi experts,

This is regarding BAPI "BAPI_MATERIAL_SAVEDATA".

If you look at MM01 Transaction, When we create Material, Under Basic Data tab, There are fields under Dimension liek Gross Weight, Net Weight.

I m passing data using above BAPI and its not updating the GROSS WEIGHT Field.

Gross Weight(BRGEW) is passed to BAPI Table BAPI_MARM (UNITSOFMEASURE).

However irrespective of using that, its still not updating BRGEW though material is getting created.

can sumone help me as how can this be done ?

Thank You