Rules UI, accessing a Variable created in another rule Any idea how to access a Variable created in another rule. I am trying to use the Data Comparison in the conditions section. Is doing this even possible or are Variables only visible within the Rule they were created?

Thanks
The variable you created in one rule will not automatically be available to other rules.  

However, if there is a rule that creates a variable that you may need to reuse frequently, one thing you can do is create it as a rules component.  Then you can reuse that setup multiple times.  It can also keep your rules leaner and cleaner!