PinChangeInt library- To attach interrupts to multiple Arduino (Uno/Mega) pins

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Is it somehow possible to change the trigger event of a pint without calling the detachInterrupt followd by an attachInterrupt?

PCintPort::detachInterrupt(PinIndex);
PCintPort::attachInterrupt(PinIndex, PinChangeInt_RC, FALLING);

Is there somethong like a PCintPort:ChangeTrigger(Pin, UserFunc, TriggerEvent); ???

I'm asking because I think there is a lot of overhead wehen I call deleteIntterupt + attachInterrupt just to change the trigger event.