Hi, mfiora,

1. you were confused about the syntax "self.sq_Y-X"
The first is the code of the y-axis, the second of the x-axis.
Because you named the y-axis "1", "2", "3", and the x-ais "SQ001" you entered a wrong statement.

And you enter it in

I assume there will be more columns - otherwise you should have used a "multiple short text" question.
So you have to o this for all columns:
(is_empty(self.sq_3_SQ001) or regexMatch('/^(\w{6}\d{2}\w\d{2}\w\d{3}\w)|(\d{11})$/',self.sq_3_SQ001)) AND
(is_empty(self.sq_3_SQ002) or regexMatch('/^(\w{6}\d{2}\w\d{2}\w\d{3}\w)|(\d{11})$/',self.sq_3_SQ002)) AND
(is_empty(self.sq_3_SQ003) or regexMatch('/^(\w{6}\d{2}\w\d{2}\w\d{3}\w)|(\d{11})$/',self.sq_3_SQ003))


2. Example (a correct code)


something else



Best regards
Joffm