Null nested properties aren't being created

Using MVEL to set nested properties appears to be broken if the properties are null. Here's an example:

public static class User {
private Address address;

public Address getAddress()

public void setAddress(Address address)

}

public static class Address {
private String city;

public String getCity()

public void setCity(String city)

}

User u = new User();
Serializable expr = MVEL.compileSetExpression("address.city");
MVEL.executeSetExpression(expr, u, "Denver");

I thought that this was working in previous releases, but this now throws exceptions about null contexts and such.