Your event structure is way off. I strongly suggest that you read some beginner tutorials to become more familiar with the process of building events.
Basically, events have conditions and actions. If all of the conditions are met, then all of the actions will be performed. You're asking C2 to check if all of those conditions you've stipulated are true (start of layout, rd=1, rd=2, etc), and then, if they are true, excecute all of those actions you've specified.
You need to split up those events into a main event that sets the variable to a random number, and then individual sub-events that check that number to produce a result. Like this:
<img src="https://dl.dropboxusercontent.com/u/14522925/C2%20examples/sub-events.jpg" border="0" />