Modify values in a DSO

Hi experts,

I have some values in a DSO as following:

As you can see, the first 4 digits of Articleid are similar, the 2 last digits are incremented 01 02 ….

I want to create a transformation form the DSO to itsself to solve my problem, but i'm stuck with the logic of my abap code, what I would like to do is to take the values of 01 and copy them on the other ids as following:

Thanks.

Amine