GooglemapMarker

Hello,
I tried to put the snipped GooglemapMarkek to work but I don’t know what is happen I can not.

I create the GoogleMapMarker snipped and the GoogleMapCode chunk.
I call the snipped in the document ([[GoogleMapMarker? &apikey=`ABQIA...`]] ), when I will see the result, the following message appears:

"It seems, that you don’t have the chunk in place what will be used in Ditto snippetcall. Please create a chunk with name GoogleMapCode (default) that has the following contents:
var point = new GLatLng([+description+]);
var marker = createMarker(point, ’[+title+]’, ’[+summary+]’);
map.addOverlay(marker); "


Can help me?

How can I call the snipped to get it work?

Please help me....
I don’t know what to do

I don’t know if I could explain me :S

I create the snipped and the chunck but I don’t know how to call them to get it to work