Gratuity calculation after 5 years of service

Good day,

I worked for a semi-government organization for a total of 5 years. I left the company in May this year. Upon leaving, I received 120k (approximately) as gratuity.

In each of the 5 years, my salary was stated as AED65k in the 1-year contracts I had with the company. There was no breakdown of my salary, allowances, etc.

In my last contract, 2021 to 2022, a new clause appeared stating that only 40 % of the AED65k would be a gratuity.

Could you please advise if I should be entitled to the whole AED65k for each one of the 5-year contacts?