Problem with viztask, callback, and oncollide

[emmy rando]

I am sorry, but the reason why I didn't include much code is because everything works. The problem is, In the oncollide function there's a yield to pause time for 5 secs before calling the function default(). But for I keep getting errors on the use viztask, maybe it's because the function called is within the fuction using viztask.schedule. If so how do I implement the use of yield.waitTime in a callback oncollide function.
def condition1():
#Code...........
.
.
.
#more code
def oncollide(e):
#Check if a ball collided with a duck
#code.............
if e.obj2 in ducks:
#code.............
e.obj2.execute(2)
#code.............
#Increment score
scoreLabel.score += 10
scoreLabel.message(str(scoreLabel.score))
panel.visible(True)
endPanel.visible(False)
op1PanelLabel6.label.color(viz.GREEN)
yield.waitTime(5)
default()

elif e.obj2 in ducks2:
#code.............
e.obj2.execute(2)
#code.............
#Increment score
scoreLabel.score += 15
scoreLabel.message(str(scoreLabel.score))
panel.visible(True)
endPanel.visible(False)
op1PanelLabel6.label.color(viz.GREEN)
yield.waitTime(5)
default()

elif e.obj2 in ducks3:
#code.............
e.obj2.execute(2)
#code.............
#Increment score
scoreLabel.score +=20
scoreLabel.message(str(scoreLabel.score))
panel.visible(True)
endPanel.visible(False)
op1PanelLabel6.label.color(viz.GREEN)
yield.waitTime(5)
default()

elif e.obj2 not in ducks or e.obj2 not in ducks2 or e.obj2 not in ducks3 :
#code.............

#code.............
viz.callback(viz.COLLIDE_BEGIN_EVENT,oncollide)

def Begin():
viztask.schedule(condition1())