HostMode WinXp
NumberField waterMarkAlpha = new NumberField();

waterMarkAlpha.setPropertyEditorType(Float.class);
waterMarkAlpha.setMaxValue(1);
waterMarkAlpha.setMinValue(0);
waterMarkAlpha.setAllowDecimals(true);
waterMarkAlpha.setAllowNegative(false);

Can't type in field value like 0.1 or 0.5