How can I use Devilspie2 to bring a window to the foreground when opened?

i try bring lollypop main window foreground (front) when opened, using devilspie2.

i use following code in config.lua:

if (get_window_class()=="lollypop")     unmaximize();     focus();     focus_window(); end

however, can see below, lollypop opened in background.

i don't think get_window_class() correct function problem, try get_window_name() or get_application_name():

if (get_window_name()=="lollypop")   unmaximize();   focus();   focus_window();  end

or run devilspie2 in terminal , check debug_print(get_window_class()) returns.

Primitatvve