Cannot understand why this not work

[BulliM]

Can anyone explain, why this works:

PHP Code:

$info = vB::getDbAssertor()->getRow('user', array("userid" => $row['userid']), false, 'username'); 


and this not:

PHP Code:

$info = vB::getDbAssertor()->getRow('anothertableindatabase', array("userid" => $row['userid']), false, 'username'); 


nor:

PHP Code:

$info = vB::getDbAssertor()->getRow('vBForum:anothertableindatabase', array("userid" => $row['userid']), false, 'username'); 


nor:

PHP Code:

$info = vB::getDbAssertor()->getRow('realdatabasename:anothertableindatabase', array("userid" => $row['userid']), false, 'username'); 


Going crazy with vB5 !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!