feedback on random objects

I would like some feedback on the following event if anyone would like to help or has a moment:

1. number of (object) = 0
Every 3"00-
pick object at random
CNO: create object at (0,0) from (object)
2. number of (object) = 0
Every 7"00-
pick object at random
CNO: create object at (0,0) from (object)

CNO= create new object

It seems to spawn rand objects instead of using time intervals; or am I just seeing it differently with added code? using the time intervals above before the drops were constant and predictable.

Appreciate the feedback