How do I get all the responses of a survey? I tried But $oResponses is always empty. (And I confirmed that $iSurveyId is valid.)

And when I test with
$oResponses = Response::model($iSurveyId)->findAll("id = :id", [":id" => 1]);
I also get an empty response. I am logged in as admin, and confirm that response for id=1 exists. What I am doing wrong?

Never mind. I got it working now. (I did not pass iSurveyId to my function correctly initially.)