try it
_root.createEmptyMovieClip("line1", 1);
_root.line1.lineStyle(50, 0, 100);
_root.line1.moveTo(100, 100);
_root.line1.lineTo(101, 101);
_root.createEmptyMovieClip("line2", 2);
_root.line2.lineStyle(50, 0, 100);
_root.line2.moveTo(160, 100);
_root.line2.lineTo(170.5, 100.5);
_root.createEmptyMovieClip("line3", 3);
_root.line3.lineStyle(50, 0, 100);
_root.line3.moveTo(230, 100);
_root.line3.lineTo(230.5, 100.5);
