Thanks Angshu for your reply.
I found the FC_ functions much more appropriate in my context. But I'm having trouble to use the parameters.
function FC_Error(eventObject, argumentsObject) {...}
The first parameter seems to exist, but not the second. Furthermore, the first one have this properties:
id: "..."
message: "..."
nature: "..."
source: "..."
__proto__: Object
I need to know the FusionChart Id to proceed accordingly.
Thanks again for your support!