I suggest to create a screenshot from your Action (to see the type of Action) and the format string.
Example
Please copy & paste the format string or regular expression separately*, so that future user don't have to type it from your screenshot.
* Enclose the format string or regular expression in backticks format string backticks to ensure that all special characters remain untouched from the forum software. You can also mark the format string and then press CTRL +e. That creates the backticks automatically around the marked text.