Need an idea for making dart game interaction

Hello,
I have gone through some random storyline courses and I found an interesting course about dart throwing game, I have tried to make it and done partially but didn't figure out that how it shows the darts on board after it thrown so please guys give me an idea about this.

I am attaching .story file which I have tried to make.

Thanks in advanced.   

Here is the link of course that I wanted to make: https://elearningchips.com/media/customcontent/templates/INT_001_ASL_0188/story_html5.html