I can't select a selector

Hi can you help me guys ?
i need really help i got stuck i can’t select a selector
here is a video
any help would help me so much


Can you use UiExplorer for making selector?
the app does not allow select item, can simple click work there plz check that as well?


I haven’t try UiExplorer, maybe i’ll try as you suggest

it’s doesn’t work either for click,