how can i get returned values from rules_invoke_event_by_args ?

Hi i have created my own events and actions.
I am invoke Events programmatically and when the conditions are met i want my actions to return some sort of value to the invoker function.

to trigger the event i use
rules_invoke_event_by_args();

this can be done with some global parameters.

is there a cleaner way of doing it with rules.

Cheers,
avinoam