[TYPO3-dev] Null result with pi_getRecord( $table, $uid );

[Mathias Schreiber [wmdb >]]

Sebastiaan van Parijs schrieb:
> Hey guys,
> 
> I got myself a little problem, and i can't figure out what i'm doing 
> wrong. Probably a basic error, but after googling for a whole day it was
> time to ask the communatie. What am i doing wrong?
> 
> // $result = nothing
> $record = tslib_pibase::pi_getRecord( 'tx_active_form', $uid );

1) is there a table (!) called tx_active_form?
2) what's the content of $uid?

cheers
Mathias