Hello. I am using Notepad++ and attempting to replace all numeric strings within a specific tag (xxxxof my XML document with a new string which has been modified by a specific variable. Here's an example (please remove the space between < and start): < start501234< /start round(501234 * 0.9) = 451111 < start451111< /start Is there a way to automatically find all numeric values within the start tag and do replace it by that same value multiplied by 0.9? I don't have to use Notepad++ if there's another tool that can do this. Thanks!