Can university alter the conditions just before the exam

I filled an application in university few months back. In advertisement univ conditions are- 1 Good Academic record 2 The appointments/ made according to these qualifications against internal quota posts will be subject to rules of relaxation as may be in vogue at any point of time. 3no relaxation in qualifications for internal candidates competing 4 The relaxation of age upto 5 years shall be allowed to all the candidates who have 5 years or more experience as superintendent or an equivalent post now at time of written exam , a new condition arrives as point 5 Selection Criteria shall be based on following Weightage Points: i. 10- 5%ii. 10+2: 5% iii. Grad: 15% iv. PG: 25% v. Relevant Experience as Superintendent/Section Officer in a recognized Univ: 18 Marks (two mark for one year experience) vi. Professional Skill/Computer Proficiency Test: 20 % vii. Interview: 12 Marks Note: Candidate with relevant experience in State/Central University shall b preferred plz help here