Issue while using .Net DLLs in AX 2012

Hi Guys,

I created a class library project in Visual Studio 2010 and have already deployed it. It created .dll files in %USERPROFILE%\AppData\Local\Microsoft\Dynamics AX\VSAssemblies folder. Till now works fine!
I set following properties while deploying VS project and save to AOT.
Deploy Client = Yes
Deploy Server = Yes
This is how project (class library looks like)

I created a job within AOT and tried to call this class library but it did not get recognized in AX.
This is how I am using it in a job5852.AOTJob.png

I have already copied .pdb and .DLL files again from Visual studio project folder into %USERPROFILE%\AppData\Local\Microsoft\Dynamics AX\VSAssemblies.
Can anyone please tell me what step I am missing as I have followed all the steps defined on this thread.
AOS server has also been restarted and Hotswapping is also enabled on server (I know its not good to enable it but its just testing purpose.)
Any help or pointer will highly be appreciated.