public function addSurveyCompareForm($tableBody, $post) {
        if ($this->sourceSurveyId && $this->targetSurveyId) {
            $sourceSurveyData = $this->getSurveyData($this->sourceSurveyId);
            $targetSurveyData = $this->getSurveyData($this->targetSurveyId);
            $surveyCompare    = $this->getSurveyCompare($sourceSurveyData, $targetSurveyData, $post);

            $icon = \MUtil_Html::create()->i(['class' => 'fa fa-exclamation-triangle', 'style' => 'color: #d43f3a; margin: 1em;', 'renderClosingTag' => true]);

            foreach ($surveyCompare as $question) {
                if ($question['status'] == 'missing') {
                    continue;
                }
                $rowMessage  = false;
                $statusClass = '';

                if (isset($this->questionStatusClasses[$question['status']])) {
                    $statusClass = $this->questionStatusClasses[$question['status']];
                }

                if ($question['status'] == 'type-difference') {
                    $rowMessage = $this->_('Question type is not the same. Check compatibility!');
                } elseif ($question['status'] == 'new') {
                    $rowMessage = $this->_('Question could not be found in source. Is this a new question?');
                } /*elseif ($question['status'] == 'missing') {
                    $rowMessage = $this->_('Warning! Question not found in target survey. Data will be lost on transfer');
                }*/

                $row = $tableBody->tr(['class' => $statusClass]);
                $row->td($question['target']);

                // Source column
                $row->td($this->getSurveyQuestionSelect($sourceSurveyData, $question['source'], $question['target']));

                // Target column
                if (isset($targetSurveyData[$question['target']])) {
                    $row->td($targetSurveyData[$question['target']]['question']);
                } else {
                    $row->td();
                }

                if ($rowMessage) {
                    $tableBody->tr(['class' => $statusClass])->td(['colspan' => 3])->append($icon, $rowMessage);
                }
            }
        }
    }