Updating Consumption in Material Master Data (forecasting)

Hello all,

I want to change the unplanned consumption values in the material master data for tab Forecasting. I found a Function module which could help me but it is not working for me.  "MB_UPDATE_MATERIAL_CONSUMPTION"

Do you know other ways to change the unplanned consumption data of the forecasting in material master data ?

Best regards,

Yoolb