UDF

Hi,

I need one udf to add quantities of material.

Input is:

BELNR QUANTITY

1001 100

1004 300

1001 50

1002 40

1001 50

1002 100

1007 500

Output should be:

1001 200

1004 300

1002 140

1007 500

Required UDF to get the above result.

Regards,

Rams.