Form builder control

I am building a custom control in Orbeon form Builder that has the following behaviors:

1- An input box that is required and has constraint.
2- The input box value is validated by sending <xforms:submission> to server.
3- If the value entered into the box is valid the server validation routine will retrun as string “wrong” or “correct”.
4- If the valid returned is “wrong “I reset the the value of the input box in #1  to empty string “value=’’”.
5- Everything is working fine expect the required behavior never get set so the “submit” button is always is enabled.

The question how I accomplish making an input box in custom control  required.

This is how my model is defined:

<xforms:model id="captchacode-model">
                 

               <xforms:instance id="Test-Value">
                        <root>
                                <flag>0</flag>
                                <value>0</value>
                                <disable-enable>0</disable-enable>
                                <Error-Message/>
                                <button2/>
                        </root>
              </xforms:instance>



            <xforms:instance src="/xforms-jsp/captcha/2captchaxmlSubmit.jsp" id="captchas"/>
            <xforms:instance id="query">
                <query/>
            </xforms:instance>
            <xforms:submission id="do-query" method="post" replace="instance" ref="instance('query')"
                               instance="captchas"
                               action="/xforms-jsp/captcha/2captchaxmlSubmit.jsp"/>
 

            <xforms:bind nodeset="instance('query')" required="true()" constraint="string-length(.) >=5"/>

            </xforms:model>

Any help is appreciated.

Thanks,

Majeed

On Mar 27, 2009, at 10:22 PM, [hidden email] wrote:
Initially, when the form is first loaded (before the service is  
called), if the input is empty, is the submit button disabled? If it  
is, it should also be disabled if the value is set to empty based on  
the response from a service.

Alex
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