Description of problem:
Using mvel dialect, it should be possible to have RHS with

$fact.setItems(["item1", "item2"]);

if fact type has "List<String> items;" field. I can input the value ["item1, "item2"] in the text input for field items and the rule validates successfully. When I save the rule, close it and reopen the text input is empty.


Version-Release number of selected component (if applicable):
ER5

How reproducible:
-

Steps to Reproduce:
1. add java.util.List to Project Imports
2. in Data Modeler, create new object type MyFact with field items of type java.util.List, save the model
3. create new Guided Rule
4. add $fact : MyFact() to LHS
5. modify $fact in RHS, set items to ["item1", "item2"]
6. save the rule, check DRL source, validate it (ignore raw types warnings), close it
7. reopen the rule

Actual results:
The text input for items field of $fact is empty. DRL source is different from what has been saved, too.

Expected results:
After reopening, the rule should look exactly like it was saved before it was closed.

Additional info:
When fixing, please take maps and arrays into account too. http://mvel.codehaus.org/Inline+List,+Maps+and+Arrays