I would like to access the whole data of the whole Element inside my userFunc.
I tinkered around by var_dumping the secondArgument (fObj) of the userFunc and found it deep inside nested but I don't know if there is maybe an easier way to access it.
I would like to create a list of checkboxes depending on data from an another sheet inside the flexform.
did you try to access your method parameters?
additionally try to enter the cObj: