Global variables?

I have this actionscript in on of my movies that loads in _level100

_global.certificateName = inputText;

I want to be able to get and use the “certificateName” in a different movie clip that gets loaded into _level100 (thus replacing the first one)… in that movie clip I have

displaybox = _root.certificateName;
in my actions line. I have set up a dynamic textbox with var name of displaybox.

When I run through my clips and enter my name—when I advance to next page where I should see my name— I see nothing?

Can anyone provide some assistance??