Regular expression issue

[ppr (Peter Preuss)]

 strText
 @"~TOTAL TIME ~154.5
 ~ CLASS TIME (120 HOURS) -~145.00
 ~TOTAL HOURS~189"
 strPattern
 "(?<=CLASS TIME.*?~)[\d.,]+"
 System.Text.RegularExpressions.Regex.Match(strText, strPattern).Value
 "145.00"