[TYPO3-ect] flexform for more than one controller

[Juan Madurga]

Hello,
I have a plugin with a controller which calls another controller in ajax way. With this new ajax controller i dont have access to the flexform content. I dont use the switch functionality so i dont find the answer in efaq.
I have tried to add the flexform to the controller like i did for the other controller:

t3lib_extMgm::addPiFlexFormValue('tx_extension_controllers_ajax', 'FILE:EXT:extension/configuration/flexform.xml');     // (pluginKey, path)

and the other 2 lines:

$TCA['tt_content']['types']['list']['subtypes_excludelist']['tx_extension_controllers_ajax']='layout,select_key,pages,recurs';
$TCA['tt_content']['types']['list']['subtypes_addlist']['tx_extension_controllers_ajax']='pi_flexform';

I didnt work. 

Does the ajax controller need extra configuration in setup.txt?

Thanks a lot

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