[TYPO3] TS multible checkbox

[andreas stein]

Hi there,

Would be great if you have a hint for me!

I want to display the values of a multible checkbox if they are checked.

20. = TEXT
20.data = 
LLL:EXT:feuserext/locallang_db.xml:fe_users.tx_feuserext_arzt_praxinfo.I.1
20.if.isTrue.data = DB : fe_users:24:tx_feuserext_arzt_praxinfo|1

But it didn't work.
Is there a solution in typoscript so i can easily do this without php or 
even writing all the possible values of a multible checkbox (19x19x..) or by 
calculating binary value with TS (how to)?

hope anyone knows this.

ciao
Andreas