[flexcoders] Summary Column in advancedDataGrid

[Harry Saputra]

 
Dear All,
 
I need your help to make a summary column, and result column from another
data column before , like that :
 

Value A
Value B
Value A * B
Summary : Value A * B / 2
Grade Summary

10
200
2000
1000
A

20
2000
40000
20000
C
 
The data source is only Value A & Value B. May I make it's real time change
on data presentation, when I edit on Value A or Value B ?
 
Thanks before