ADT ABAP Eclipse highlight selected variable

Somehow in my #ADT the feature of highlighting the selected variable got “lost” ( deactivated ).
Using a fresh workspace helped for some time, than it happend again that I did not see any highlighting.

Just now I found it in the preferences:

I was often before checking the wrong place:

– The annotation are very handy as well … but the highlight of selcted variable is a MUST have feature.

Hope it helps anybody