RangeValidator with formatted values

Question

I just need to know if I'm missing something obvious here but I have a RangeValidator control assigned to a text box..ranges are from 0 - 9999.  When I retrieve data the text value is assigned to that box via datareader("myNumberCol").ToString which will put in a comma seperator if needed.  example 9,123....My RangeValidator does not like the comma's...is there some other way besides regular expression validators?...

thanks
Doug