RoleEnvironment.IsAvailable not working in Azure Cloud Service

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Azure

Hi,

Note: Below issue happening in Azure Cloud Service not in Computer Emulator(local).

i have an MVC application (site1-C#.NET-MVC) hosted in Azure using site1 web role into cloud service. i hosted new site (site2-web application-VB.NET) under one cloud service.
Both sites are under one cloud service and running good.
but site2 has a upload file functionality for which i am using LocalResource for which we need RoleEnvironment. site2 not able to place file into LocalResource, upon checking RoleEnvironment.IsAvailable is always FALSE.

To Fix it i have create new role (site2 role) into project and deployed to cloud.
So now i have site1 role(which host site1) and site2 role(which host site2). But still RoleEnvironment.IsAvailable throwing FALSE. :(

i have done remote debugging as well.
update1:
site1 -> https -> port:443
site2 -> https -> port:553

Update2: I verified RoleEnvironment.CurrentRoleInstance, it is returning NULL