AWS eligibility for resignee

Am an employee of a company serving my notice period. As per my contract for AWS, it mentions that "AWS equivalent to one month base salary or the prorated amount will be payable upon fulfilling of minimum 6 months of continuous service"

I have resigned on 5th May 2012 and am serving my notice period of 1 month. I want to know if the Co. is bound to pay me the AWS for Jan-5th June 2012 or its at their discretion.
AWS is not mandatory payment and it subjects to management’s discretion, you have to refer to the employment contract or the company policy.

Secondly, does the 6 month continuous service apply for every year or is it one time only.
Please refer to earlier reply.