Dear Erel,
 
I already learned a little about B4XPages from this video . 
As i understand , B4XPages is an alternative way (Technology) of the standard default way (Activities) . by other words : when i start a new application , i have to choose : Standard activities OR B4XPages .. IS This Right ? 
if this is right , is it simple to update my current project (Based on Activities) to use B4XPages ? 
Thank you very very much