[rules-users] Agregate function count, the rule doesn't activates.

Hi, I have written the next rule : rule "Too many events in a short period of time" dialect "mvel" when $user : User() Number(intValue > 3) from accumulate($event : Event(userId == $user.id) over window:time(1m) from entry-point Event , count($event)) then //Java code... end And the events, I insert in the Event entrypoint, are 4 and have these timestamps: Calendar cal1 = Calendar.getInstance(); cal1.set(2010,9,23,10,30,00); Calendar cal2 = Calendar.getInstance(); cal2.set(2010,9,23,10,30,05); Calendar cal3 = Calendar.getInstance(); cal3.set(2010,9,23,10,30,10); Calendar cal4 = Calendar.getInstance(); cal4.set(2010,9,23,10,30,15); Has the rule any syntax or semantic problem, knowing that i aim to catch if there has been more than 3 events in the last minute? -- Nicolás Sanchez