Problem with Rendered property using SPEL

Question

I have a page with three different graphs. This page is associated with a AM which has a PVO object. The PVO has three transient boolean variables and I set all except one to false by calling initProperties in the processRequest method.
I have tied this three different boolean variables to 'Rendered' property of three items of type graph in the page.
I am using the ${oa.<instancePVO1>.<Attribute>} syntax in the Rendered property.
Despite this, I see all three graphs rendered when I launch the page. But I can see that only one of three attributes for the PVO is TRUE.
Can anyone think of some aspect that I missed?
Your help will be appreciated.
Thank you,
Arun

Answer 1

Hi Harinath and Gowtam,
Thank you for the reply.
I am setting the attributes in PVO properly to false. I actually use the variables to three different queries on which the graphs are based on and they fire the right ones. Only the problem is with the rendered property using the SPEL.
Also, I made sure that there is only one row in the PVO and it is initialized properly with the Primary key and I am using the PVO.first() to retrieve it.
It would helpful if you could throw some light on how to debug the SPEL...I tried System.out.println-ing the SPEL expression ${oa.PVOinstance.attribute} but I get errors...
Thank you,
Arun