Hi Rob, Could you provide us with a self-contained example? The following example code works as expected: store:read('x'), delete node <a/> Best, Christian ________________________________ Von: Rob Stapper via BaseX-Talk <basex-talk@mailman.uni-konstanz.de> Gesendet: Donnerstag, 4. Dezember 2025 14:26 An: basex-talk@mailman.uni-konstanz.de <basex-talk@mailman.uni-konstanz.de> Betreff: [basex-talk] store:read within an updating function Hello Christian, Allthough the store:read function returns an empty sequense I found that it still triggers the error: 'expressions must all be updating ....', when used within an updating function. I guess this error is unnecesary. The workaround is quite easy by using a void function[1] [1] store:read( $name) => void() mvgr. Rob Stapper