thanks man. but the problem is object is getting created outside viewport because of the position of ringSpawner.
+ System: Every spawnSpeed seconds
-> System: Create object ring on layer "game" at (ringSpawner.X, ringSpawner.Y), create hierarchy: False, template: ""
-> ring: Set animation frame to random(0,3)
-> ring: Set Bullet angle of motion to 90 degrees
-> ring: Set Bullet speed to ringSpeed
but when i put some bullet action on it to 90 degrees it not going towards the right instead of downward motion. surprisingly if i set the angle as 10 degree also it si going the same direction as when i set the 90 degree.