i am trying to extend checkbox and add a descreption and value to each item

the thing is I've tried to connect the java with the dialog but its not working 
what i did wrong

html 

<div data-sly-use.valueAndDescription="com.adobe.aem.guides.wknd.core.models.ValuesAndDescriptionsModel">
  <input type="checkbox">
  <h2>${valueAndDescription.fieldLabel}</h2>
  <p>${valueAndDescription.fieldDescription}</p>


  <ul data-sly-list="${valueAndDescription.valuesAndDescriptions}">
      <li>
          <p>Value:</p> ${item.value}<br>
          <p>Description:</p> ${item.description}
      </li>
  </ul>
</div>

content.xml

<jcr:root xmlns:sling="http://sling.apache.org/jcr/sling/1.0" xmlns:cq="http://www.day.com/jcr/cq/1.0" xmlns:jcr="http://www.jcp.org/jcr/1.0"
          cq:icon="text"
          jcr:primaryType="cq:Component"
          jcr:title="Adaptive Form CheckBox"
          sling:resourceSuperType="/libs/fd/af/components/guidecheckbox"
          componentGroup="Adaptive Form"/>

 dialog 

<jcr:root xmlns:sling="http://sling.apache.org/jcr/sling/1.0"
    xmlns:granite="http://www.adobe.com/jcr/granite/1.0"
    xmlns:cq="http://www.day.com/jcr/cq/1.0"
    xmlns:jcr="http://www.jcp.org/jcr/1.0"
    xmlns:nt="http://www.jcp.org/jcr/nt/1.0"
    jcr:primaryType="nt:unstructured"
    jcr:title="Adaptive Form CheckBox field"
    sling:resourceType="cq/gui/components/authoring/dialog"
   
>
    <content
        granite:class="cmp-adaptiveform-checkbox__editdialog"
        jcr:primaryType="nt:unstructured"
        sling:resourceType="granite/ui/components/coral/foundation/container">
        <items jcr:primaryType="nt:unstructured">
            <valuesAndDescriptions
                jcr:primaryType="nt:unstructured"
                sling:resourceType="granite/ui/components/coral/foundation/form/multifield"
                fieldLabel="Values and Descriptions"
                name="./valuesAndDescriptions"
                fieldDescription="Add values and their descriptions for the checkbox options.">
                <field
                    jcr:primaryType="nt:unstructured"
                    sling:resourceType="granite/ui/components/coral/foundation/container">
                    <items jcr:primaryType="nt:unstructured">
                        <value
                            jcr:primaryType="nt:unstructured"
                            sling:resourceType="granite/ui/components/coral/foundation/form/textfield"
                            fieldLabel="Value"
                            name="value"
                            required="{Boolean}true"/>
                        <description
                            jcr:primaryType="nt:unstructured"
                            sling:resourceType="granite/ui/components/coral/foundation/form/textfield"
                            fieldLabel="Description"
                            name="description"
                            fieldDescription="Add a description for the value."
                        />
                    </items>
                </field>
            </valuesAndDescriptions>
        </items>
    </content>
</jcr:root>

Interface 

package com.adobe.aem.guides.wknd.core.models;

import com.adobe.aem.guides.wknd.core.models.impl.ValueAndDescriptionImpl;
import org.apache.sling.api.SlingHttpServletRequest;
import org.apache.sling.api.resource.Resource;
import org.apache.sling.models.annotations.DefaultInjectionStrategy;
import org.apache.sling.models.annotations.Model;
import org.apache.sling.models.annotations.injectorspecific.SlingObject;

import java.util.List;
import java.util.Map;

public interface ValuesAndDescriptionsModel {

    public String getFieldLabel();
    public String getName();
    public String getFieldDescription();
    public String getValue();

    abstract List<Map<String, String>> getValuesAndDescriptions();
}

java 

package com.adobe.aem.guides.wknd.core.models.impl;

import com.adobe.aem.guides.wknd.core.models.ValuesAndDescriptionsModel;
import com.adobe.cq.wcm.core.components.util.AbstractComponentImpl;

import org.apache.sling.api.SlingHttpServletRequest;
import org.apache.sling.api.resource.Resource;
import org.apache.sling.models.annotations.DefaultInjectionStrategy;
import org.apache.sling.models.annotations.Model;
import org.apache.sling.models.annotations.injectorspecific.SlingObject;
import org.apache.sling.models.annotations.injectorspecific.ValueMapValue;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

@Model(adaptables = SlingHttpServletRequest.class,
        adapters = {ValuesAndDescriptionsModel.class},
        defaultInjectionStrategy = DefaultInjectionStrategy.OPTIONAL,
        resourceType=ValueAndDescriptionImpl.RESOURCE_TYPE)
public class ValueAndDescriptionImpl extends AbstractComponentImpl implements ValuesAndDescriptionsModel{

    @SlingObject

    private Resource resource;

    @ValueMapValue
    private String[] valuesAndDescriptions;

    @ValueMapValue
    private String value;

    public static final String RESOURCE_TYPE = "dow-platform/components/forms/checkbox";


    @Override
    public String getValue() {
        return this.value;
    }

    @Override
    public String getFieldLabel() {
        return resource.getValueMap().get("fieldLabel", String.class);
    }

    @Override
    public String getName() {
        return resource.getValueMap().get("name", String.class);
    }

    @Override
    public String getFieldDescription() {
        return resource.getValueMap().get("fieldDescription", String.class);
    }



    @Override
    public List<Map<String, String>> getValuesAndDescriptions() {
        List<Map<String, String>> result = new ArrayList<>();

        for (String valueAndDescription : valuesAndDescriptions) {
            String[] parts = valueAndDescription.split("\\|");
            if (parts.length == 2) {
                Map<String, String> entry = new HashMap<>();
                entry.put("value", parts[0]);
                entry.put("description", parts[1]);
                result.add(entry);
            }
        }

        return result;
    }
}