Onlinestatus If statement to display Chat Button

I am using a chat software and they provided me with a chat button.

I want to place an if statement using the onlinestatus field. So it would be something like:

[cb:if onlinestatus="yes"] display chat button code [/cb:if]

Whats the value I should use for online / offline? Is it 0/1 or yes/no or something similar??? How should I do this?

Believe you should be using true/false. Example as follows.

[cb:if onlinestatus="true"]ONLINE[/cb:if]
[cb:if onlinestatus="false"]OFFLINE[/cb:if]