<zk>c<vbox><label value="1.type 11 in the spinner"/><label value='2.click "set spinner constraint" button'/><label value="3.click button of spinner"/><label value="4.the number should be added or decreased by 2 or it is not correct!"/></vbox><window title="Spinner test" border="normal"><spinner id="sp"/><separator /><button label="set spinner constraint"><attribute name="onClick">sp.setValue(new Integer(1));sp.setStep(2);sp.setConstraint("min -10 max 10");</attribute></button></window></zk>