getting hierarchy from r/3 to BW

HI i have the Hierarchy(structural) in r/3, in T-code ppose. When i check the HRP1000 and HRP1001, i can see the data. But the Extractor is not showing up any records in Rsa3.

1. I am going with T-code rsa3

2. Giving the Extractor name as 0HR_PA_OS_1 and then when i execute, it is giving me 0 records.

what am i missing in here.

I need to get the Hierarchy that was built in R/3 to BW, can someone let me know about this.

Thanks,

Kris.