function pulsate(obj,xsize,ysize,minx,maxx,miny,maxy,xspeed,yspeed){
	let signalx=1;
	let signaly=1;
	ObjRender_SetScaleXYZ(obj,xsize,ysize,0);
	loop{
		while(signalx==1){
			xsize-xspeed;
			if(xsize<=minx&&signalx==1){
				signalx=0;
				break;
			}
			wait(1);
		}
	}
	loop{
		while(signalx==0){
			xsize+xspeed;
			if(xsize>=maxx&&signalx==0){
				signalx=1;
				break;
			}
			wait(1);
		}
	}
	loop{
		while(signaly==1){
			xsize-yspeed;
			if(xsize<=minx&&signaly==1){
				signaly=0;
				break;
			}
			wait(1);
		}
	}
	loop{
		while(signaly==0){
			ysize+yspeed;
			if(xsize>=maxx&&signaly==0){
				signaly=1;
				break;
			}
			wait(1);
		}
	}
}