Because when I try this procedure to insert the record I get the following error?
raised exception class 'External: SIGSEGV'.
procedure TExtDBListBox.InserisciRecord();
begin
MyDataSourceOut.DataSet.Append;
MyDataSourceOut.DataSet.FieldByName(MyFieldIn).Value:=MyDataSourceIn.DataSet.FieldByName(MyFieldIn).Value;
MyDataSourceOut.DataSet.FieldByName(MyFieldList).Value:=MyDataSourceList.DataSet.FieldByName(MyFieldList).Value;
MyDataSourceOut.DataSet.Post;
end;