Afraid not. The Rev-Ed simulator doesn't provide any output or interface which could drive any 'add-on' and there isn't anything else which simulates a PICAXE.
For doing this sort of thing I would write the program using a PC programming language and run it on the PC. When I had it working I would translate the PC program into a PICAXE program.
An alternative may be to set and clear bits in memory so that when you view memory in binary within the simulator the data bits look like the dot matrix would be; 1 is LED on, 0 is LED off. I'm not sure how easy that would be as I don't use the sumulator much.