[attroll]

$answer4 is not a default variable that is included in the hack. Any additional variables that you add you also have to add in the lower part of the plugin.

Look for a code in the lower part of the plugin that looks like this:

 
    if ($answerall == "1")
    {
        if ($normalanswer1 == '' OR $radioanswer1 == '' OR $radioanswer2 == '' OR $radioanswer3 == '' OR $answer1 == '' OR $answer2 == '' OR $answer3 == '' OR ($checkboxchoice1_1 AND $checkboxchoice1_2 AND $checkboxchoice1_3) OR $longanswer1 == '')
        {
            $errormessage = "$bbuserinfo[username], you need to answer every question!";
            eval('print_output("' . fetch_template('STANDARD_ERROR') . '");');
            exit();
        }

You will need to ad the "OR $answer4" in there in the proper format.