Hey, Christopher,
I'm sure there's a way to reference the label object, but I don't have an example off the top of my head.
I handle this type of thing differently, by data-driving all of the conditional report output. So if there's an "English-like" selection criteria that I want to display at the bottom of a report, I add a string column to one of the report's datatables, map it to a text field that can grow/stretch on the report, and then populate the contents at runtime.
With this approach, very rarely have I ever had the need to modify a label's text. I only use report labels for content constants that are unlikely to change. The other advantage of this approach is that if you ever need to output the report content to a different tool, the majority of the report content is in your dataset.
Hope that helps...
Kevin