Trying to add Repeat Endings, nothing happening

So I’m in Write Mode and have selected the bar/bars which I would like to add the Repeat Endings on, I select the Create Repeat Ending from the Toolbox and nothing happens. What am I missing here?

Yeah, I had watched this video earlier but still wasn’t working. I figured it out though… if you have Bar Repeat Regions in place, it won’t let you put repeat endings on top, you have to remove the % areas first.