Dmx-style:display="none" does not work?

Hi,

Why doest it not work ? It does not hide the element as expected.
image

Because this is a dynamic attribute which expects a dynamic expression. none is not a dynamic expression.
If you want to hide an element, use the display properties in App Structure properties.

Thank’s, it works like this now:
dmx-hide="menu_hidden.value.M_100_EMPS==1"