What's wrong with this code ?

Hey, i have a code to check of the rotation when i collide with something .. it's working but when i rotate to (90,270,0) the gravity change is not working .. "Print();" is working in the sentance but the others don't. and when i change the rotation to (270,90,0) it works !! so what's the problem !!

 function OnTriggerEnter (other : Collider) {
 if(other.gameObject.tag == "grav-right"){
  if(transform.eulerAngles == Vector3(90,270,0)){
 
         ray1 = Ray(transform.position, transform.up);

         if (Physics.Raycast(ray1, hit1, jumpRange)){ // wall ahead?
  
                  JumpToWall(hit1.point, hit1.normal); // yes: jump to the wall
   
              }
  
          }
  }
 }