Having trouble with destination based SNAT irule

So, uhm...

 

 

With this limitation, how do they expect people to create complex irules to action based upon source or destination network ranges. I looked through the thread posted earlier but don't see a clear solution on how to make this work.

 

 

Full disclosure, iRules are still a learning curve since we've moved to the F5 platform from other load balancing platforms used prior.