[TYPO3-extbase] Own ViewHelper and ObjectStorage results in #1273753083: Cannot cast object of type "TYPO3\CMS\Extbase\Persistence\ObjectStorage" to string

[Manfred Rutschmann - VOLUMEN Werbe-/Internetagentur]

Hey Guys,

on TYPO3 6.1.3 i have a strange problem. I cant pass object storages as a argument to my own viewhelper. What i do:

copy the for viewhelper in Class/ViewHelpers/ForViewHelper.php
change the namespace to namespace VOLUMEN\Collaboration\ViewHelpers;
put {namespace cn = \VOLUMEN\Collaboration\ViewHelpers} in my template

and go on with this:

<cn:for each="{branchsection.branches}" as="branch">
							
</cn:for>		

does not work...

this works:

<f:for each="{branchsection.branches}" as="branch">

</f:for>

It's the same code, my view helper is a clone from the fluid view helper, but it throws the exception above. Thats strange...

Any idea how to geht this to work?

Many Thank,

regards Manfred