Recognize existing score symbols in Expression Map

Is it possible in Cubase 7.5 to take a score full of regular score symbols, apply an Expression Map, and have symbols be recognized by the Expression Map and converted to Articulations/Dynamics lane entries?
For example, I have a piano score with lots of Ped (pedal down) and * (pedal up) marks in it, and I want to apply an Expression Map that maps these two symbols to CC64 commands.