[rules-users] Globals in LHS of a rule?

Hi there, according to the online documentation globals are supported in the LHS of a rule, yet requires a bit of care to use there. But how do I use globals in the LHS? Is there any option to access a globals variable directly like: globals List myList rule "SomeRule" when myList.size() == 2 then ... Or can I have to use globals only in eval() statements? cu, Michael