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This was just answered in the paragraph above your question.

http://forum.zkoss.org/question/99821/zk-8-form-object-how-to-get-value/?answer=99825#post-id-99825

I'll add this again here, maybe in got lost in the mixed answer.

If you need to initialize and pre-populate some values in the Form you can manually create a proxy:

Pojo originalPojo;
Pojo pojoForm = ProxyHelper.createProxyIfAny(originalPojo); //form proxy around the pojo
pojoForm.setIcdVersion(123456); //will set the value in the form only
                                //does not affect the originalPojo

public Pojo getPojoForm() {
  return pojoForm;
}

/*getter setter for originalPojo*/

and use it in the zul file:

<groupbox form="@id('fx') @init(vm.pojoForm) @load(vm.originalPojo)
                @save(vm.originalPojo, before='savePojo') " >

I hope that clarifies the usage for you

This was just answered in the paragraph above your question.

http://forum.zkoss.org/question/99821/zk-8-form-object-how-to-get-value/?answer=99825#post-id-99825

I'll add this again here, maybe in got lost in the mixed answer.

If you need to initialize and pre-populate some values in the Form you can manually create a proxy:

Pojo originalPojo;
Pojo pojoForm;

@Init
public void init() {
    //retrieve original Pojo ...
    //create a proxy around the originalPojo
    pojoForm = ProxyHelper.createProxyIfAny(originalPojo); //form 
    //set a value in the form proxy around the pojo
pojoForm.setIcdVersion(123456); //will set the value in the form only
     //does not affect the originalPojo
originalPojo direcly, only after successful saving
    pojoForm.setIcdVersion(123456); 
}

public Pojo getPojoForm() {
  return pojoForm;
}

/*getter setter for originalPojo*/

and use it in the zul file:

<groupbox form="@id('fx') @init(vm.pojoForm) @load(vm.originalPojo)
                @save(vm.originalPojo, before='savePojo') " >

I hope that clarifies the usage As you can see there is no need for you

This was just answered in the paragraph above your question.

http://forum.zkoss.org/question/99821/zk-8-form-object-how-to-get-value/?answer=99825#post-id-99825

I'll add this again here, maybe in got lost in the mixed answer.

If you need to initialize and pre-populate some values in the Form you can manually create a proxy:

Pojo originalPojo;
Pojo pojoForm;

@Init
public void init() {
    //retrieve original Pojo ...
    //create a proxy around the originalPojo
    pojoForm = ProxyHelper.createProxyIfAny(originalPojo); 
    //set a value in the form proxy only
    //does not affect the originalPojo direcly, only after successful saving
    pojoForm.setIcdVersion(123456); 
}

public Pojo getPojoForm() {
  return pojoForm;
}

/*getter setter for originalPojo*/

and use it in the zul file:

<groupbox form="@id('fx') @init(vm.pojoForm) @load(vm.originalPojo)
                @save(vm.originalPojo, before='savePojo') " >

As you can see there is no need for an Object like Simple form SimpleForm anymore. You still work with your original class' interface, just behind a proxy.