[TYPO3] Getting template file from flexforms

[Christian Lerrahn]

Hi,
I'm trying to set a template file for my extension in the flexforms.
However, when I select a file or upload one specifically for the
plug-in, I end up with only the file name in
$this->cObj->data['pi_flexform'] but not the path. Now, as I don't know
if the file was directly uploaded in the plug-in configuration or just
included from somewhere in fileadmin/, I cannot predict that path. How
can I tell where that file is?

Cheers,
Christian