Hi People I am very new at Regex. I found out that 0-99 has expression "(?:\b|-)([1-9]{1,2}[0]?|99)\b" and 100-200 has "[1-2]\d\d". 

I wanted to find out how it would be to write a range 9990001 - 9999991.

Any answer which makes it work would be gladly appreciated. Thanks