ok the operating problems are related to:
- the new webMapViewer must have a google key with the Map Embed active
- the restrictions on the key must be able to allow the use of Map embed
- Everything works even without a secure protocol
- the xojo documentation does not give any indication of this and I hope they update it as soon as possible as it still refers to the control of the 2019 rel
(HOWEVER THANKS TO THE TECHNICAL SUPPORT THAT DUE TO CROSS TESTS ALLOWED ME TO GET TO MAKE THE OBJECT WORK)