Handle custom view focus on a SGDEX project

I added an RSG component inside an SGDex view and tried to manage RSG Component in SGDex View. I have a view where a button call a custom view, then the custom view can make many functions like show other options of video or change the subtitles, when this custom view takes the focus and i try to set it to an other component like : m.otherComponent.setFocus(true) on a onKeyEvent function this reset the content of my custom view, i dont know how to handle my component because it seems i cant set a focus ,maybe i have been doing bad but in the documentation appear like this: