How do I use Article button without a URL to launch a Custom Bot (from a button)?

I want customers to click a button in an Intercom Article and for the custom bot to launch. Currently, if I create a button within an Intercom article e.g. CLICK HERE TO REGISTER INTEREST, it forces me to enter a URL. When the article is live and in testing, when I click the button, the bot launches, but it also takes me to wherever the URL leads (or refreshes the page if using current page URL) and makes the Intercom Widget transparent and loses its formatting.

Any ideas?