prblem in reading Cookie value

[eluser]CroNiX[/eluser]
You didn't post enough code to be able to tell what's going on for sure.

You can't read a cookie that was set until the NEXT page request. So if you are setting it and immediately trying to read it, it won't work. Cookies, CI or not, don't get sent until the final output is sent to the browser because it's sent in the headers.