[TYPO3-mvc] Model object tree building with Tx_Extbase_Persistence_ObjectStorage property

[Claus Fassing]

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I get in trouble with a Tx_Extbase_Persistence_ObjectStorage defined
field as follow

Entry (root object)
 title (string)
 company (Company object)
 [...]

Company
 name (string)
 contact (Tx_Extbase_Persistence_ObjectStorage of Person object)
 [...]

Person
 forename (string)
 lastname (string)
 [...]

<f:form method="post" action="create" name="entry" object="{entry}">	
  <f:form.textbox property="company.name" id="companyname" />
	<f:form.textbox property="company.contact.forename" id="forename"/>		 			
	<f:form.textbox property="company.contact.lastname" id="lastname"/>
</f:form>
				
I can write on the field name of company object (company object will
created),
but writing on forename or lastname always failed with
#1251814355: transformToObject() accepts only numeric values and arrays.

Then I try to create Person in the action and add it.
$contact = t3lib_div::makeInstance('Tx_Myext_Domain_Model_Person');
$entry->getCompany()->addContact($contact);
$this->view->assign('entry', $entry);

But I get the same error message.

Are there any restrictions with Tx_Extbase_Persistence_ObjectStorage in
the domain model and forms ?

Regards Claus
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