hi,
ok, i write 10 records as example.

1.mynan.dbf is empty, except field19, 159 records have flags as 1,2,3...
2.myexldata.dbf have 19 fields with full data,
3.when i run my code,i need to see at nan.dbf full data as xldata.dbf .
4.if i change in the future at xldata,and run mycode again ,i need to replace the new data i update to nan.dbf.

thanks.
m.qasem