Set drop shadow via formula

In case somebody is also looking for this:

Had too look a bit for the exact format (forgot about the “expected format” hint on the formula) but here is the format to set a shadow with a formula:

"0px "+"0px "+"8px "+"4px "+ "color" 

(just change color after the last + to your specific shadow color

here how it looks like in a fomula:
Bildschirmfoto 2024-06-03 um 22.50.39