Rule question

I'm not sure this is possible but I'm canvassing opinion as I'm stuck.

I need to write a rule for a many to one event followed by a single event (an example of this would be multiple password guess attempts followed by a successful login).  The problem I have is the event count - using an X followd by Y rule the event count is global - I'd like to set the event count per condition.  Setting it globally means that for an example of 100 guesses followed by a successful login, X needs to be 100 and Y needs to be 1, set the event count to 100 and it will never trigger, set it to 1 and it will trigger every time a user fat fingers their password.

Anybody think of a way round it?

Thx