Management of nested StorageObj is not working

[yolandab]

Given the following class definitions

class SO1 (StorageObj):
'''
@ClassField attr1 __main__.SO2
'''
class SO2 (StorageObj):
'''
@ClassField attr2 int
'''

If we set the values with the following code that assigns a persistent object to the nested StorageObj :

o=SO1("name_of_SO1")
a=SO2("name_of_SO2")
o.attr1=a
o.attr1.attr2=4

And we try to use it from a different application:

o=SO1("name_of_SO1")
print(o.attr1.attr2)

Throws the exception "Value not found".
If the assigned StorageObj is not persistent this code works.