JEXL: all object variables return null

I'm trying to get a jexl script to work.

|// arranging namespace Print Map<String, Object> ns = new HashMap<>(1); 
ns.put("Print", System.out); // make System.out.println available in 
expressions JexlEngine je = new JexlBuilder().namespaces(ns).create(); 
// arranging custom Map for accessible variable 'agent' in script 
Map<String, Object> myMap = ....; myMap.put("test", testRef); 
JexlContext jc = new MapContext(myMap); // arranging script JexlScript 
script = je.createScript(expression); Object result = script.execute(jc); |||||

|The testRef is just a simple instance of this class: |

privatestaticclassTestContextVar {

publicString getInstanceVar(){

return"instanceValue";

}

}


with the expression being this:

|{ Print:println("blabla"); const x = test.getInstanceVar(); 
Print:println(x); return true; } |

||

The first command just prints "blabla" to the console, so the printing 
via System.out.println works flawless.

However, for the variable test: it does exist, because jexl doesn't 
report "unsolvable variable". Also, Print:println(test) just prints the 
memory address as expected.

However, any method of the test Object which I try to call, always 
returns null. I just get a null printed to the console.

Also, when I call test.instanceVar (which should be possible, it is just 
a POJO), I get "undefined property 'id', assuming false". Whereas 
test.getInstanceVar() returns just null.

Anyone any idea what could go wrong here?


thanks, Rinke