how to check if specified number of targets are in proximity sensor?

[Vaquero]

Hey there! Can anyone tell me what's the best way to check, if a specified number of targets are inside a proximity sensor?

I have an experiment in which a person is required to move a specified number of targets into a proximity sensor in order to continue. On top of that, this should be done within a specified time, e.g. 5 seconds.

I tried something like:

...
...
def task1(numActiveTargets):
    import random 
    numTrials = 100
    
    for trial in xrange(numTrials):
        targetSensor = random.choice(sensors) #a list of sensors
        activeTargets = manager.getActiveTargets(sensor=targetSensor)
        if len(activeTargets) < numActiveTargets:
            yield vizproximity.waitEnter(sensor = targetSensor, target = targets) #seems to be activated by any target in list of targets
            
        yield viztask.waitTime(5)

def experiment():
    yield task1(2)
    yield task1(3)

viztask.schedule(experiment)

...but it wouldn't work. Like, I'd have to check for 5 seconds if my chosen sensor contains at least 3 targets, for example.