Update save() error

[mis-uep]

I have trouble saving update with this error. Please help! Thanks!

Fatal error: Uncaught Error: Call to undefined method Phalcon\Mvc\Model\Resultset\Simple::save()

Here is my code:
$updateOerl = Oerl::find("StudID = '$resultStud->StudID' AND SysNum = $result->SysOsbj");
$updateOerl->SysNum = $result3->SysNum;
$updateOerl->save();

[quasipickle]

find() returns a result set, not a single record. What you want to use is findFirst(). You also want to use prepared queries to eliminate the possibility of code injection into your queries. So modify your code like so:

$updateOerl = Oerl::findFirst([
    "StudID = :stuid: AND SysNum = :sysnumber:', 
    'bind' => [
        'stuid'     => $resultStud->StudID,
        'sysnumber' => $result->SysOsbj
    ]
]);

[mis-uep]

Thanks man..