Internal table

HI all,

int_outtab is my final internal table.

I am getting order quantity(WMENG) from VBEP.

and modifying the quantity in table as per my VBELN in int_outtab.

Here my problem is......................

VBELN WMENG

0000003756| 25.000 |

0000003756| 0.000 |

0000003756| 1.000 |

i want to update this data into my internal table based on VBELN.

1.000 ||0000003756| <

0.000 ||0000003756| <

0.000 ||0000003756| <

see here i am able to update last value only the remaining are 0.

plese help me regarding this...

VKR.