Can the coin symbol prefix in a cloned NXT blockchain start with a digit? Creating a new blockchain with the Nxt Blockchain Creation Kit, is it possible to use a coin symbol prefix beginning with a digit in the wallet address?

I get an error that the address is malformed when I try this. Should I look for an error, or is this impossible?
No, adding a coin symbol prefix is not doable as it will impact other functions that might take it as a parameter. Your better off just doing it on the front end using a css :before class using the content: property.