when a sensor moves over some other object

[durf]

Ok thanks for the quick response. Now if I set my pillars(the blocks) like this, can I impliment the same code that was posted above into this... or do I have to construct it differently?

columns = [-20, -10, 0, 10, 20]
rows = [0, 6, 12, 18]
pillars = []

for x in columns: #creates an array of pillars
     for y in rows:
          pillar = OrginalPillar.copy()
          pillar.translate(0+x, 0, 0+y)
          pillar.setScale(1,1,1)
          pillar.visible(viz.OFF)
          pillars.append(pillar)

number = 0
def showPillar():
      globae number
      pillars[number.visible(viz.ON)
      number += 1
vizact.ontimer2(.5,len(pillars)-1,showPillar)