Aggregate qty by plant using Crosstab

Hello All,

Could anyone give me more details about using crosstab? I never used crosstab action block in MII workbench.

Here is what I have in my XMLOutput.

Plant     Qty          MaxQTy

1001     1500          15000

1002        500           1000

1002        10000        15000

1004          0               12000

I need the output like this

1001        1500      15000

1002        10500     16000

1004          0          12000

In the Crosstab action block I was mentioning Document output in the Document Source and in the Crosstab columns I mentioned Matnr column. How to get the Aggregate Qty and Max Qty by material? 

Thanks,

Latha