How do I set Object degrees 0 to 270 loop?

hello guys

im trying to make one object (120,20)size When press (space is down ) start Degrees 1 rotate counter - clockwise from 0 to 270 and when object is 270 rotate clockwise (270 to 0) over and over..

Space is up = Stop rotate.

object Origin: X=0 Y=125

maybe:

global number rotateDir = 1

global number ang = 0

space is down

--- add 100*rotateDir*dt to ang

--- sprite: set angle to ang

ang>270

--- set rotateDir to -1

ang<0

--- set rotateDir to 1

actually the 90° is 270 in C2 when Origin x=0 y=125

https://drive.google.com/file/d/0B8mc-_g50xBlT0lfMUxJVnJMdUU/view?usp=sharing

so.. i need when space is pressed spriteAngel start angle 0° to 90° "(270) on c2" and when SprteAngel =90°(270)

go back to 90°(270) to 0°

"btw how can i post image on post so people dont need to click the url link"?

actually the 90° is 270 in C2 when Origin x=0 y=125

https://drive.google.com/file/d/0B8mc-_g50xBlT0lfMUxJVnJMdUU/view?usp=sharing

so.. i need when space is pressed spriteAngel start angle 0° to 90° "(270) on c2" and when SprteAngel =90°(270)

go back to 90°(270) to 0°

"btw how can i post image on post so people dont need to click the url link"?

Use imgur.com.

After you post the imgur's URL on your post, use the IMG tag to show the image.

Angles in c2 and most places in graphics are clockwise from the right. Anyway the idea is the same, just change the values. Just change 270 to 90 and ang to -ang.