Hi guys

I've been trying to write a regular expression.
If I'm tryin to validate a sequence of characters as follows...

AB1-232-623482-743 43/3

where

a) any character after the "AB" can be any alphanumeric character
b) the " 43/3" part is optional

is there a quick neat way for me to do this?

i know i could do something like

regexp=[A][B][A-Za-z0-9]-[A-Za-z0-9][A-Za-z0-9][A-Za-z0-9] etc etc

but this looks like a very untidy way to it..

Any help would br greatly appreciated.