double x$1=($source$.$latitude $-$ mxMin$)*$ xPer$1$;

double x$2=($destination$.$latitude $-$ mxMin$)*$ xPer$1$;

double y$1=($myMax $-$ source.longitude$)*$ yPer$1$;

double y$2=($myMax $-$ destination.longitude$)*$ yPer$1$;

Line line $=$ new Line$($x$1,$y$1,$x$2,$y$2)$; $//($x$1,$y$1,$x$2,$y$2)$;

line.setStrokeWidth$(8)$;

line.setFill$($Color$.$YELLOW$)$;

split.getItems$().$add$($line$)$; Why doesn't work $?$