[TYPO3-dev] accessing data from one flexform sheet on another sheet of the same form

[GranDiablo]

Hi guys,

I am currently working on an extension where the user should be able to 
choose (in the backend) a certain table from the database at one sheet 
of a flexform. This is no big deal and working without any trouble. What 
I am trying to do then is that on a second sheet of the flexform the 
user can choose the different columns of the table specified on the 
first sheet. Is that possible at all? Because I have got the problem 
that I cannot access the data of the flexform on this second sheet. On 
the second sheet a function is called that is supposed to get the data 
from the flexform. The function itself is called (and when table is 
hardcoded working), but it cannot access the data of the flexform. Is 
there any possibility to get the data on that second sheet? Or do I need 
a different approach without flexform?

regards
Chris