KML Elevation

Hi, my site I added a KML file created by converting from a GPX file, using Google Earth. By inserting it in an article, I see the map correctly but not the elevation plot. What mistake have I committed? How are we to create KML files to be able to view all the information?
Thank you

Hi.
Can you give direct link to your page with an article with map, where you expected elevation diagram

Hi, excuse me if I do not put first
www.esatrail.it/index.php?option=com_con...e&id=120&Itemid=1248

A question ... can be that the KML file must have a reduced number of points?

You call plugin by path ID. In this case I get all configuration for map from map ID, which belongs this path.

I mean, if you enable and configure elevation profile for this map you'll get it

And 'exactly what I do, and the option for the elevation chart is active and set area.
I did several tests and I noticed that if I limit the files kmThe 500 points or less, the elevation chart is displayed properly. There is possibility to raise or remove this limit?

I use Google's visualization. And I only pass data to it's chart. I don't know it's limits or something else.
But I think 500 points enough to process all file and show diagram.