Update dataset with grid's cell client content

[Stemon63]

Hi Farshad,

I'm looking for a system that calculate a cell  with the sum of other cells, at client level (dbgrid) for fast calculation in the record.
I have noted that with  record.get and record.set  I can manage cell content. All ok. 
But how I can  send the update value of a cell to the relative dataset? How to communicate with server and update the record? 
(I have tried Grid.getStore().sync(), Grid.getStore().commit(), Grid.getStore.commitChanges(), but  do not works...)
Thanks in advance!

[Abaksoft]

MyDataSet.Edit; 

MyDataSet.Post;