Conditional formatting based on words from criteria list

hey!,
i'm using google spreadsheet and trying to search for words from a criteria list with conditional formating, I only run into 2 problems...

This works if I'm in the same sheet as the criteria list and the data.
1.
=ArrayFormula(REGEXMATCH(A1,join("|",K$6:K$7)))

but if I want to put the criteria list in another Sheet;
2.
=ArrayFormula(REGEXMATCH(A2,join("|",Config!E$2:E$5)))

Then google conditional formatting gives an error that the formula is incorrect :/ (If I test formula 2 in the data sheet it works, but not if I want to use it as a formula for conditional formatting.)

how can i use "isblank" in this formula? so that using Config!E:E becomes a bit easier?

in Google Sheets, for some functions that fail when referencing another sheet, these are usually fixed by using the INDIRECT function.

are you able to provide a link to a demo file (a copy that has sensitive data replaced with demo data)?
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