Change Default Cropping Aspect Ratio

Hi,

Within Scissors we have the option to change the cropping aspect ratio. At the moment, the default values are set to 4:3. Does anyone know where these can be changed? I found these two lines within scissors.php, but it didn’t work after I changed them.

$aspectX = isset($width) ? $width : 4;
		$aspectY = isset($height) ? $height : 3;

Thanks!