title: How can i create a Dynamic Multi-Select List in hippo cms?
body: <p>I am trying to create a Dynamic Multi-Select List. I tried to add a DynamicDropdown and added Multiple in  Fields properties but throws an error:</p>
  
  <p>An error has occurred, sorry for that.</p>
  
  <blockquote>
    <p>java.lang.IllegalStateException:
    org.onehippo.forge.selection.frontend.plugin.DynamicDropdownPlugin
    does not support fields that are multiple: please use
    org.onehippo.forge.selection.frontend.plugin.DynamicMultiSelectPlugin
    for that. Field name is *. Failed to instantiate plugin class
    'org.onehippo.forge.selection.frontend.plugin.DynamicDropdownPlugin'
    for wicket id
    'home.cluster.cms-static.plugin.servicesLoader.cluster.cms-services.plugin.defaultEditorFactory.cluster.cms-editor0.plugin.editorPlugin.cluster.<em>default</em>.plugin.preview.cluster.<em>default</em>.plugin.dynamicdropdown-preview.cluster..plugin.home.cluster.cms-static.plugin.servicesLoader.cluster.cms-services.plugin.defaultEditorFactory.cluster.cms-editor0.plugin.editorPlugin.cluster.<em>default</em>.plugin.preview.cluster.<em>default</em>.plugin.dynamicdropdown.cluster.<em>default</em>.service.wicket.id'
    in plugin
    'home.cluster.cms-static.plugin.servicesLoader.cluster.cms-services.plugin.defaultEditorFactory.cluster.cms-editor0.plugin.editorPlugin.cluster.<em>default</em>.plugin.preview.cluster.<em>default</em>.plugin.dynamicdropdown-preview.cluster..plugin.home.cluster.cms-static.plugin.servicesLoader.cluster.cms-services.plugin.defaultEditorFactory.cluster.cms-editor0.plugin.editorPlugin.cluster.<em>default</em>.plugin.preview.cluster.<em>default</em>.plugin.dynamicdropdown.cluster.<em>default</em>.plugin.root'
    (JcrPluginConfig:/hippo:namespaces/system/DynamicDropdown/editor:templates/<em>default</em>/root)</p>
  </blockquote>