Hi, mperiello,
of course you can add numbers.
Please set in "advanced settings" "text input": ON
As described in the manual:
www.limesurvey.org/manual/Question_type_-_Array_(Numbers)
Text inputs (input_boxes)
Description
Show a text input and not a dropdown. Step is not used , minimum and maximum value is used.
Your main problem:
Only if the question is not mandatory:
In "Question validation equation:" set something like:
(is_empty(self.sq_SQ001_A1)) AND (is_empty(self.sq_SQ003_A2)) ... (first cell, first row and second cell, third row)
To fake the mandatory style you can add that all other cells must be filled, e.g. "AND (!is_empty(self.sq_SQ001_A2))..."
Regards
Joffm