How to programmatically stop LG webos fire work screen server when running webos application

i’m develping artwork casting webos application LG smart TV devices. when casting a image after one hour it’s shows screen server with fire work animation with black screen. How to programmatically stop that.

In the webOS TV, Screen Saver always works except while playing a video in the full screen mode. And as of webOS 6.0, there is no option to disable it. Sorry for not being helpful.