Hello comunity

I need some help and example regarding Cursor.

The application that i am using create a cursor with the account and values for the accountancy program and i need to change some account of the cursor (Cursor Name :TESTE) before sending the movment on accountancy.
Someone could give a simple exemple on how to change values on original cursor, create a new one based on the original, change values on this new cursor and finally return/replace the new data to the original Cursor with the new values:
for ex:

my original cursor TESTE have the following conta (account) and edebito (DEBIT value) and ecredito (CREDIT value):

Account                debit                         credit
3111131                 162,87
3111131                                              162,87
321                         174,67
24321131                 37,46
221111                                                212,84
3111111                   11,80
3111111                                                11,80
243211111                 0,76

I pretend the replace the original Cursor TESTE with this result:
225111               162,87 
24321131             37,46
221111                                                 212,84
225111                 11,80
24321111               0,71

In fact,base on orginal Cursor TESTE, i need to do theses changes
1 line : if account = '311' aand Debit <> 0 then account = 225111
2.line : if account = '311' and Credit <> 0 then DELETE
3.line: if account = '321' then DELETE
4.line: if account = '24321131' OK Keep
5.line: if account = '221 ' OK Keep 
6.line :  if account = '311' aand Debit <> 0 then account = 225111
7.line : if account = '311' and Credit <> 0 then DELETE
8.line : if account = '243211111' the  OK Keep

Note : i have try this code

Select  * from  TESTE into Cursor NewCursor READWRITE
--I have make the changes
Select TESTE
DELE ALL
Append from dbf("NewCursor")

But the result of the Original Cursor TESTE don´t change.



Many thanks for your help,
Luis Santos