CHIPMUNK draw Wall?

[AlphaMensch]

hi,

I am new in Chipmunk and I have a problem:
I am going to make a game with a ball falling down and you could draw a line. The ball should bouncing on this line, but my code doesn´t work. Nothing happens.
Here is my Code:

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
	UITouch *touch = [[event allTouches] anyObject];
	
	CGPoint location = [touch locationInView:self.view];
		
	BEX = location.x;
	BEY = location.y;

}

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
	UITouch *touch = [[event allTouches] anyObject];
	
	CGPoint location = [touch locationInView:self.view];
	
	ENX = location.x;
	ENY = location.y;
}
- (void)setupChipmunk {
       cpBody *splineBody = cpBodyNew(INFINITY, INFINITY);
       splineBody->p = cpv(BEX+ENX/2, BEY+ENY/2);
       cpShape *splineShape = cpSegmentShapeNew(splineBody, cpv(BEX,    BEY), cpv(ENX, ENY), 0);
       splineShape->e = 1; splineShape->u = 0.1; splineShape->collision_type = 0;
       cpSpaceAddStaticShape(space, splineShape);
}

ENX,ENY,BEX,BEY = int

AlphaMensch