DATA Repeating in report when i have mutli dimensions

[jaganlalrm]

Hi

see there i have use multi dimensions

in one dimensions i have

Student name
Student id

in another dimensions i have

subjects

in measures i have marks

Reports i got displayed is

Name  Subject   Marks
Jagan maths       80
          science      90
          English       70
          maths
          science
          English
          maths
          science
          English
Kumar maths       
          science     
          English       
          maths       60
          science      70
          English       80
          maths
          science
          English
Babu   maths       
          science     
          English       
          maths
          science
          English
          maths         100
          science        70
          English          50


Tell why am getting like this. I done any thing wrong in creating dimensions in transformers.
or done anything wrong creating report. 
Thanks in Advance