Yes, this is possible; however it will require that you use a custom item in order to complete the task.

http://www.empirisoft.com/medialab/h...stom_items.htm

Basically, you'll need to create an HTML file with 15 rows by 4 columns of textboxes, coming to a total of 60 textboxes and variables allocated within MediaLab. If you want, I would be glad to assist in setting this file up for you.

Be sure to see the custom item samples located within the samples folder (Commonly C:\MediaLab\Samples).