Storyline display a javascript variable

Yup. Are you setting the variable first though?

No, you can't display a javascript variable in SL. You must have JS pass the value to a SL variable that already exists, then you can use %varaiable%.

thanks, I've been trying setVar(javaVariable, storylineVar); then doing %storylineVar% but no luck yet.

oops, I meant more like this:  setVar("storylineVar", javaVariable);  

%storylineVar%

I only get the default value for the storylineVar displayed.

Here is what I forgot:  var player = GetPlayer();

Publish this, enter text and click "How long is it?"

Or here's a variation that is independent of any SL variable (tweetLength is a text variable).

var player = GetPlayer();

var Tweet="Cows and horses";
player.SetVar("tweetLength",Tweet);