extracting string between delimiters

hello,

I am stuck with simple logic as how to extract the string between 2 delimiters.

I am doing IP address check within in the installer to verify the user is within our domain. As per one of the member suggestion in my previous post , trying to split ip address using the wordfind. Here i got simple doubt as how to get the number between 2 delimiters(192.168.97.6)such as 168 in the example.

thanks,

Sorry. i got the answer.