[How to convert a string to a single in Boo][Need help!!!]

Hi, all!
How can I convert a string to a single in Boo?
I wanna read some parameters from a file, and all parameters are read in as string. I try the cast(single, string) to convert them to single, but it does not work. How can I do the converting?

Thanks a lot!

Don’t double double post.

http://forum.unity3d.com/threads/90437-How-to-covert-a-string-to-a-single-in-Boo-Need-help!

Sorry, something wrong with my net, I thought I did not post successfully at the first time…