Regarding Inheritance in BPM Objects

Hi,
We are having requirement such that we are three objects: dataObject (containing one attribute - Name) , interfaceObject(containing attribute - City) and flowObject. The requirement is such that we need to inherit the properties of dataObject and interfaceObject into flowObject. Hence, we use feature of ALBPM known as "Type Inheritance" as "Behaviour" and "Inheritance" mapped as interfaceObject.
Now we are having main process where we have made a instance variable as "insDetails" of type flowObject and set the value of insDetails.Name as "Rajat" and insDetails.City as "Mumbai".
Now we are having one interactive activity which uses the instance variable "insActivity" of type interfaceObject inside the screenflow just after setting the above values for Name and City in Automatic activity before Interactive activity.
Flow: Begin --> Automatic ( Setting the value for insDetails ) --> Interactive ( Mapping is done with insActivity ) --> Screenflow ( we want to get the values of City and Name as defined in Automatic activity as "Mumbai" and "Rajat". Also, insActivity inherit from interfaceObject).
The problem is that when we are trying to log the values for insActivity.Name and insActivity.City inside the screenflow, we are getting "Null Pointer Exception". We are unable to get the values of insDetails into insActivity inspite of the fact that insActivity inherits from dataObject.
Please let me know how can we access the values inside the screenflow for inherited objects.
Thanks,
Abhishek

HI Heidi,
I beleive your understanding is correct & agree the name is slight confusing This difference is not clear however reading the label descriptions of the checkbox carefully will help to clear configuration. Documentation at [1].
Just to demonstrate let us use geometrixx example. In author instance
*    Go to http://<host>:<port>/content/geometrixx/en/products/triangle.html
*    On the right side you would see iparasys, Select "Cancel Inheritance" & save.
*    Go to http://<host>:<port>/content/geometrixx/en/products/triangle/overview.html
*    You would see it is not inherited & if you are in edit mode you would see "Parent canceled inheritance"
For second case
*    Go to http://<host>:<port>/content/geometrixx/en/products/square.html
*    In Iparasys Select "Disable Inheritance" & save.
*    IN edit mode you would see "Inheritance disabled" & in preview mode not inherited from the parent page.
[1]   http://dev.day.com/docs/en/cq/current/wcm/default_components.html#Inheritance%20Paragraph% 20System%20%28iparsys%29
Thanks,
Sham

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But my requirement is bit more complicated.
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Regarding Inheritance in BPM Objects

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