<window id="win" title="new page title" border="normal"
	apply="org.zkoss.bind.BindComposer"
	viewModel="@id('vm') @init('org.zkoss.zktest.bind.issue.B00912ValueReload')" validationMessages = "@id('vmsgs')">
	<label multiline="true">
		1.change textbox to abc, you will see a error message, textbox's value should keep abc
		2.change textbox to def, the error message was gone, and label value become def
	</label>
	<vbox>
		<hbox>
			label.
			<label id="l1" value="@load(vm.value)" />
		</hbox>
		<hbox>
			textbox.
			<textbox id="tb1"
				value="@bind(vm[vm.prop]) @validator(vm.validator)" />
			<label id="msg1" value="@load(vmsgs[tb1])"/>
		</hbox>
	</vbox>
	<button label="dump" onClick="binder.tracker.dump()"/>
</window>

package org.zkoss.zktest.bind.issue;

import org.zkoss.bind.ValidationContext;
import org.zkoss.bind.Validator;
import org.zkoss.bind.validator.AbstractValidator;

public class B00912ValueReload {

	String value = "KGB";

	public String getValue() {
		return value;
	}

	public void setValue(String value) {
		this.value = value;
	}
	
	public String getProp(){
		return "value";
	}
	
	public Validator getValidator(){
		return new AbstractValidator(){
			@Override
			public void validate(ValidationContext ctx) {
				if(!"def".equals(ctx.getProperty().getValue())){
					addInvalidMessage(ctx, "value has to be def");
				}
			}
		};
	}
}