How to add nocache tag to a generated page like node/[number]/webform-results/table?

I use the Webform module, which can output all its results via a table at the node/[number]/webform-results/table path. However, at some point, that table was visible to Google and some private content was made public. So I've submitted a request to have the offending URLs removed, and I've specified that path be excluded from crawling via robots.txt, but Google tells me it needs to see a nocache tag on the page you want removed. Can't figure out if this is even possible via Nodewords.

In 1.12-rc1 I specified this path, with wildcards (node/*/webform-results/*), have the nocache tag. It's not appearing. Is there something else I need to do to make that happen?

Thanks!