Thanks, updated and used it. Great tool. Very useful for those who have trouble with template languages (like me

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Ok, after update other rules got messed up or they weren't working even before (although it looked ok). With columns you can use tool, but I need rules for comments and covers. I have
program:test(field('comments'), 'black', 'red') (as I understand first color is for true, second for false, how to make it to do something only then it is false? If I remove black, it colors everything in red)
With tool I made rule to color red if there is nothing in the column.
So it checks comments and tagsshelf. I also want to add covers:
and another rule
program:test(field('cover'), '', 'red')
But it isn't working.
I need it to color in red if there is no cover, comments or tagsshelf (tags separated comma, combined column). If any is missing it should color.
TIA