Getting null while trying to access SlingBindings Object from SlingHttpServletRequest

Hello,

I am having a problem while accessing SlingBindings Object from SlingHttpServletRequest. While trying to read the SlingBindings object from SlingHttpServletRequest Attribute, it is giving "null" some times. This is a very big problem for our project and It would be greatly appreciated if some one help me out of it.

Thank you!