Hierarchical Level

Hi All,

How can i append the structures in the table in tha Hierarical level.

For example, i am appending the Zstructures(ZH1,ZH2,ZH3,ZH4)

in the table MARA .

I know Append the above structures but how to maintain Hierarchy's the above structures in the table MARA .So the Hierarchy should be ZH1-ZH2-ZH3-ZH4.

Waiting for your reply.

Thanks,

srini