[rules-users] Can "From" reason over primitive arrays?

I am trying to pattern match on a primitive array such as String[] or SomeObject[]. The documentation only mentions collections in the section about From. Would a pattern match syntax such as... rule "My rule" when $source : SourceObject() $myObject : MyObject() from $source.returnsAnArrayProperty then .... ..be correct? If not, how can capture and loop over every object in an array (not Collection)? I have tried the above and I get a ClassCastException. HC