Adressing id's on the same page

Hello,

on this page (https://kriesi.at/support/topic/custom-id-for-layout-elements/) it is said, that the avia advanced layout builder is automatically giving an id to every element on the page (avia-el-xx). But i didn’t sucsseed in linking to that id (e.g #avia-el-1 for navbar).
Is this due to my incompetence, or is this really not possible?
The second question I have (to the same topic):
I manually give the shortcodes an id in debug mode e.g.:
<div id="myid">[av_layerslider id='4']</div>
to link to them. That works very good, but if I use the advanced layout builder afterwards the code between the <div> </div> will be deleted (here [av_layerslider id=’4′]).
Is there any solution to this? I also tried to change the code in the standard editor, but that doesn’t work at all for me.

Thanks in advance for your help, hope to hear from you