I've got a window which has id="windowTest". It's a popup window I open with

Executions.createComponents("~./zul/includes/demande/windowTest.zul", null, args)

In my ViewModel i've got a wire on the window

@Wire
Window windowTest

In my AfterCompose I initialize the window title :

void afterCompose(@ContextParam(ContextType.VIEW) Component view) {
        Selectors.wireComponents(view, this, false)
        windowTest.setTitle("test")
    }

Everything works fine, the popup open with the title "test".

I've got a button with a command and when I pushed it it does :

@Command
public void myCommand() {
windowTest.setTitle("toto")
}

The title of the window is now : "tototest"....