How to read Transaction data from a specific member dimention in BPC

Hi Experts,

I want to read specific member data from cube I'm implementing Badi UJ_CUSTOM_LOGIC

There is a Dimention Called SUBITEM in this there are so many members like

Parent member ==>>SUBITEM

Under Subitem Member==>SUBTOT

Under SUBTOT there are two sub child

                                   INROAM & OUTROUM

                         Under INROAM there is there are two member dimentions

                              INROAM-POS

                              INRAOM-PRE

                        Then inraom-pos have input

                                   MOU-101 upto MOU-105 ( The User Will Enter Data In this)

                         Then INRAON-PRE

                                   MOU-201 upto MOU-205 ( The User Will Enter Data In this)

I want to get the data of member Dimention (SUBTOT)

like there so many Dimentions how Should I read specific transaction data from the CUBE

Regards

Mohammed Sajid