Created attachment 990634 [details]
model.jar

Rules like this bellow generated NPE when business-central is parsing it:

rule "ToyWithoutName "

dialect "java"
	when
		$father: Father()
		$kid: Kid() from $father.kids
		$toy: Toy(name == null) from $kid.toys
		

	then 
		System.out.println("blabla");
end



Version-Release number of selected component (if applicable):
6.0.3


How reproducible:


Steps to Reproduce:
1. add as dependency the attached jar in a project
2. push the attach role to the git repository where the project is
3. click on Project Authoring - business-central will try to parse the rule for verification and will generated the exception (actually hidden by the GenericPortableException )

Actual results:
GenericPortableException

Expected results:
No exception, the rule should be opened