Clearing the chat log

[dizzi]

Hi

In order to clear posts from a previous chat session, the following parameter can be set:

$utparams['max_msg']= 0;

However when I do so, an error message shows up stating that the value must be a positive number number. As far as I am aware, zero is positive so this must be some type of glitch. I set the parameter to "1" and it works but that means that the last post from a previous session is always viewable. Has anyone got a solution?

Cheers