Dataset items not showing

I have created a new dataset and want it to appear at the bottom of my layout. However, that doesn’t seem to work. I have selected the dataset inside the widget, but as you can see in the screenshot it still shows ‘Enter text’ instead of the specified values from the dataset. Do you have any idea what I’m doing wrong? If more information is needed, please let me know.

Nevermind, the problem has been solved.