Guttenberg temporary solution for ads on the fly insertion

Hi friends,

Has anyone tried to put “ads-on-the-fly” by inserting shortcodes <!–Ads1–>, <!–Ads2–> into an article by a Guttenberg shortcode widget?
I mean to put the shortcode into a shortcode widget?
I do not have a test site, just an active one,so I dare not try it.

If someone have a test site please check this.

thx