Show/Hide field of Checkbox in touchui aem 6.2

Hi guys,
I am working in touch ui aem 6.2.
i have a issue: show/hide field of checkbox not work

<showhide
     jcr:primaryType="nt:unstructured"
     sling:resourceType="granite/ui/components/foundation/form/checkbox"
     text="Do you want to show field?"
     value="true"
     class="showhide"
     name="./isShowField"
     showhide-target=".showhide-field" />
<content
     jcr:primaryType="nt:unstructured"
     sling:resourceType="granite/ui/components/foundation/container"
     class="showhide-field"
     showhide-target-value="true">
     <items jcr:primaryType="nt:unstructured">


     </items>        
</content>   

Why does it not work?
Can anybody help me?

Thanks,