If you don't need to do variability charts specifically, you can do similar stuff in graph builder. 
 
Names default to here(1);
dt = open("$SAMPLE_DATA\Big Class.jmp");
dt << Graph Builder(
	Size( 528, 454 ),
	Show Control Panel( 0 ),
	X Group Edge( "Bottom" ),
	Variables( Y( :height ), Group X( :age ), Group X( :sex ) ),
	Elements(
		Points( Y, Legend( 10 ) ),
		Caption Box( Y, Legend( 9 ), Summary Statistic( "N" ) ),
		Box Plot( Y, Legend( 11 ) )
	)
);
