@sravs Thank you very much for the detailed answer about the difference of data-sly-attribute with strings or booleans. That is very helpful as well!

@chaudharynick Thank you very much! That worked just like I wanted.

Hi there,is there a way to dynamically add the "hidden" attribute without an value to an element, when wcmmode.edit is inactive, and remove the attribute completely, when wcmmode.edit is active? Desired: Solution with dynamic attribute without valueMy HTL-Code looks something like this: <div class="...