[TYPO3-mvc] PropertyMapper in scheduler command

[Heiko Kromm | Paints]

Hi list, 

I have a commandController, which is called by the scheduler. 
In this Controller I want to map data to my domain model. My domain model has a 1:n relation. 
I map the data like this: 
$newObject = $this->propertyMapper->convert( 
array( 
'pid' => 3, 
'myName' => 'Test', 
'relationObject' =>array( 
'relationObjectName' => 'Test2', 
'pid' => 3 
) 
), 'Tx_MyExtension_Domain_Model_Testmodel' 
); 

Without the relationObject it works fine. But if I want to have the relationObject created, I get this error: 

Exception while property mapping at property path " relationObject ":Creation of objects not allowed. To enable this, you need to set the PropertyMappingConfiguration Value "CONFIGURATION_CREATION_ALLOWED" to TRUE 

Any hints on how I can set the value to true? 

Thanks 
Heiko