Open level in level

Hello everyone, I’m a newbie and I have a Little question.
I’ve tried to open a new Level with a widget-button and everything works fine in the Editor, but when I Launch this, the button opens the wrong map. It’s the simplest blueprint I could make. I have chossen a click on button Event to open Level. There I have named the map in the box, but it won’t work. Perhaps someone can help me. I believe that there is another node I have to link with the open Level, so the engine knows what map he has to open, but with the play-button everything works fine, only when I Launch the game, it won’t work. Everytime it opens the wrong map.
Please help me.
Thanks a lot, and good work