Error in result.total.script.php

Hello:

I’m using WordPress 3.5.1. When I select the option “Total Result” in a survey I received the following error message:

PHP Notice: Undefined index: wp-content\plugins\wp-survey-and-quiz-tool\pages\admin\surveys\result.total.script.php on line 17

The code related with this error is:

16. foreach ( $question[‘answers’] as $answer ) {
17. $nameArray[] = $answer[‘text’];
18. $valueArray[] = $answer[‘count’];
19. }

Any suggestions ?

TIA

http://wordpress.org/extend/plugins/wp-survey-and-quiz-tool/