I have a script that runs on Google Forms. It is to look for multiple choice grids and transform them to multiple choice questions if rows or columns are > 3.

The form is set to one answer per row and an answer key is set.

Upon running the script, I get both “An error occurred: gridItem.getValidation is not a function” and “An error occurred: Invalid data updating form.”

I want to script to transform grid items to multiple choice, retrieve correct answers from the answer key, limit choices to 3 (1 of 3 should be correct answer), and limit to 3 choices.

Logs:
Jun 18, 2024, 10:50:15 AM Info Error updating grid item: gridItem.getValidation is not a function
Jun 18, 2024, 10:50:15 AM Info Error: gridItem.getValidation is not a function

        // Handle GRID items
        try {
          var gridItem = item.asGridItem();
          
          // Get rows and columns from the grid item
          var rows = gridItem.getRows();
          var columns = gridItem.getColumns();
          
          // Check if the grid item has 3 or fewer rows or columns
          if (rows.length <= 3 || columns.length <= 3) {
            continue; // Skip this grid item if it has 3 or fewer rows or columns
          }
          
          // Iterate over each column in the grid
          for (var c = 0; c < columns.length; c++) {
            // Create a new MultipleChoiceItem for each column
            var newMultipleChoiceItem = modifiedForm.addMultipleChoiceItem();
            newMultipleChoiceItem.setTitle(columns[c]);
            
            // Prepare choices based on the grid options for the current column
            var choices = [];
            
            for (var r = 0; r < rows.length; r++) {
              var answerText = gridItem.getValidation().getValidationForCell(r, c).getHelpText(); // Assuming the answer is stored in the help text
              var choiceText = rows[r] + ' - ' + answerText;
              var isCorrect = answerText === 'correct'; // Adjust as per your validation logic
              choices.push(newMultipleChoiceItem.createChoice(choiceText, isCorrect));
            }
            
            // Shuffle the choices
            choices = shuffleArray(choices);
            
            // Limit to 3 choices
            choices = choices.slice(0, 3);
            
            // Log choices before setting
            Logger.log('New multiple-choice item choices: ' + JSON.stringify(choices));
            
            // Set choices for the new MultipleChoiceItem
            newMultipleChoiceItem.setChoices(choices);
            Logger.log('New multiple-choice item created with choices: ' + JSON.stringify(choices));
          }
          
          // Remove the original GridItem from the form
          modifiedForm.deleteItem(item);
        } catch (e) {
          Logger.log('Error updating grid item: ' + e.message);
          throw e;
        }
      }
    }`
```


I want to script to transform grid items to multiple choice, retrieve correct answers from the answer key, limit choices to 3 (1 of 3 should be correct answer), and limit to 3 choices. 

Adequate multiple choice questions are populating with 3 answer choices, but 1 of the 3 choices is usually not the correct answer.