A neutral is not a ground, and it sounds like your electrician did not understand how the networked lights are wired.
(Honestly, if it was that simple, the manufacturers would tell you you could do that in the user guide and we wouldn’t have all the threads in the forum about how to address the no neutral issue.)
@Navat604 or one of the other electrical experts in the community may have some more specific comments on your situation. I’m sure it’s very frustrating.