rules taxonomy

My intent is to perform an action whenever a specific taxonomy vocabulary is modified and saved (terms reordered, name or description change).

I have the following rule:

Event:
After updating an existing vocabulary

Data comparison condition:
Data to compare: [vocabulary:machine-name]
Data value: my_vocab_machine_name

Action:
Show a message on the site
Message: Yeah! my taxonomy was modified

How do I create a rule condition based on taxonomy term(s)?
I've tried using "textual comparison", and using the [node:term] token, but to no avail.
Thanks for your help!

Hi all, if someone could point me in the right direction I'd be very grateful.

I am setting up a simple rule to add a taxonomy term when a new node is created. The term name will be the title of the node.

I have added the title of the node to a new string variable, however when I go to add the taxonomy term action its still unavailable - "Assign a term to content - Unavailable argument: Taxonomy term". How do pass the argument?

I'm using drupal 6.13 and rules 6.x-1.0

Thanks

John