First I created two attributes in my actor called Spawner (invisible). The first one is a integer called random_value and the 2nd is a boolean called TimerSaysGo.

when collision with actor ... => change attribute randomSpawn to random(1,5) etc...

ive got a change attribute to x and y positions from some game attribute

-- change attribute randomSpawn to random(1,5)

When self.positionX < or = to -240, change attribute self.positionX to 720 + 240 + self.positionX

If attribute enemyDie - true

guess first of all you gotta delete the behaviour that constrain the rotation of the actor with the angle of the joystick.

when mouse is pressed, save Coordinate Y in a self.attribute or game attribute, your choice.

When you click on 'next' or whatever button or process you have that finished your level, have the attribute unlock the next level.

On exp jet I just made the background twice as big as my scrolling direction doesn't have to be but it gave me more room to draw the background so it dissent look as if it was repeating as often then

When self.positionX < or = to -576, change attribute self.positionX to 1600 + 576 + self.positionX

I have an attribute called choose (integer) and an actor which is invisble and on the ground with the following rules :

When Puck collides with horizontal wall change attribute self.Motion.Linear Velocity Y to -self.Motion.Linear Velocity Y

I still have some doubts like what kind of attribute should be the game level?(interger,real, ect).

Is there a way to have an attribute changed when the home button is pressed?

Have an attribute called game level.

Is there a way to have an attribute changed when the home button is pressed?

I haven't tried it nor the following, but it might work possibly: maybe try Constrain Attribute instead of Change and the Timer?

Change Attribute: self.PositionX = self.PositionX + (game.TargetX-self.Position.X)/4

change attribute to something