custom event in fusion

Hi,
Is it possible to create a new event in fusion?

Like " ev:OnRenderEnd()" or " OnFrameRendered() ", these are the predefined events in fusion.

I want an event to be run on loader import.

I want a script to be run automatically whenever I import a loader in fusion workflow.
Is it possible??

You could just test to see if the tool added to the flow is a Loader.

Yes sir.

But my concirn is, whenever I drag file sequence into fusion and drop it in work flow, a script will automatically run.

It does not? It should.

Sorry, I didn't get your point . Basically, i wanted to say that wenever I drag a loader to the fusion flow , a respective script should run. Could you please suggest something accordingly .