Hi, I have data from a text file (consists of 2 columns : A and B with data respectively)which is read and stored into a Vector <Objects>. I have multiple input files with 2 columns of data so used Vector<Objects>. This collection of data is loaded to my rule runner which loads data in the rulebase and fires rules on that data. 1. how do I upload the modified data output into another text file? Should I reload it in a vector? But whenever rule is fired and data is modified how can I store the modified data in another file? Because my input and output has different columns. 1. is using a vector a bad way?? Could I do it in any other better way? 2. how can I identify what my A and B columns are- to load the specific rule only?? As of now I am just reading its name and storing it. Could I do it in a better way??? Please help!! Thankyou. M </pre> <P><hr size=1></P> <P><STRONG><font color=green>Please consider the environment before printing this email.</font></STRONG></P> <P><STRONG>Visit our website at <a href="http://www.nyse.com">http://www.nyse.com</a> <br> ***************************************************************************** <br> Note: The information contained in this message and any attachment to it is privileged, confidential and protected from disclosure. If the reader of this message is not the intended recipient, or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the sender immediately by replying to the message, and please delete it from your system. Thank you. NYSE Euronext. </STRONG></P><pre>