How to enter Google AdSense code

I would like to insert Google AdSense ads inline in a thread.

I wrote the Google AdSense Script in the TEXT form in "Ad Manager" in addon Ads Manager.

However, no ads are displayed when actually browsing.

If I write simple text (for example, "Hello") instead of the Google AdSense Script, the text is successfully displayed.

Is there something wrong with the way I wrote the Google AdSense Script?

I have written the Google AdSense Script in the red-framed area attached.

*I am Japanese,so the UI is in Japanese.

Thank you in advance for your help.