hotspot js() and google analytics

Hey,

When I'm pasting this google analytics code into a layer, everything works fine:

<layer name ="123" onclick="js(ga('send', 'event', 'DEMO', 'clique', 'pano', 36););"/>

I receive the datas into google analytics.

But when I past the very same code in a hotspot:

<hotspot name="spot1" onclick="js(ga('send', 'event', 'DEMO 2', 'clique', 'pano', 36););" />

I don't receive any datas in google analytics.

Any idea why ?

Did anyone ever successfully set a Google Analytic tag in a <hotspot> ?