Adobe Extending Flash Professional CS5 - Manual (Page 431)

409 EXTENDING FLASH PROFESSIONAL
Stroke object
Last updated 5/2/2011
var myStroke = fl.getDocumentDOM().getCustomStroke();
myStroke.style = "ragged";
myStroke.pattern = "random";
myStroke.waveHeight = 'flat";
myStroke.waveLength = "short";
fl.getDocumentDOM().setCustomStroke(myStroke);