88a89
>
91c92,104
<               $checked = in_array($valueAttribute, $propertyValue);
---
>               foreach ($propertyValue as $value) {
>                   if (is_object($value)) {
>                       $identifier = $this->persistenceManager->getIdentifierByObject($value);
>                       if ($identifier !== NULL) {
>                           $value = $identifier;
>                       }
>                   }
>                   // Not quite sure if identical or equal operator here; in_array did not use strict version
>                   if ($valueAttribute === $value) {
>                       $checked = TRUE;
>                       break;
>                   }
>               }
112a126,139
>
>   /**
>    * Get the name of this form element, without prefix.
>    *
>    * This is done to prevent the extra __identity being added for objects
>    * since it leading to property mapping errors and it works without it.
>    *
>    * @return string name
>    */
>   protected function getNameWithoutPrefix()
>   {
>       $name = parent::getNameWithoutPrefix();
>       return str_replace('[__identity]', '', $name);
>   }
114d140
<