Please go through the following paragraphs to get a better understanding in case you have not yet done so.
Payment of Gratuity
Gratuity shall be payable to an employee upon the termination of his employment after he has rendered continuous service for not less than five years:
(a) on his superannuation,
(b) on his retirement or resignation,
(c) on his death or disablement due to accident or disease.
It is provided that the completion of continuous service of five years shall not be necessary where the termination of the employment of any employee is due to death or disablement.
For the said period of one year, if the employee during the twelve calendar months preceding the date with reference to which the calculation is to be made, has actually worked under the employer for not less than:
(i) one hundred and ninety days, in the case of an employee employed below the ground in a mine or in an establishment which works for less than six days in a week; and
(ii) two hundred and forty days, in any other case.
Yours is a borderline case, but you are not legally bound to pay as you have not fulfilled clause (ii) stated above - 240 days in the fifth year, as rightly mentioned by Mr. Nathrao.
Thanks and Regards