var a=this.getValue();
var b=contentPane.getWidgetByName("b").getValue();
if(a=="清罐"&&b>50){contentPane.getWidgetByName("sua").setVisible(false);}
else{contentPane.getWidgetByName("sua").setVisible(true);}
if(a=="清罐"&&(b>50||b<0)){contentPane.getWidgetByName("sua").setVisible(false);}
var a = this.getValue();
var b = contentPane.getWidgetByName("b").getValue();
if (a == "清罐" && (b > 50 || b<0)) {
contentPane.getWidgetByName("sua").setVisible(false);
} else {
contentPane.getWidgetByName("sua").setVisible(true);
}