(WIX project) Paste data from a database into an HTML placeholder on a dynamic page with post.message or similar solution

We are buidling a webiste on Wix and require someone with good coding skills to build an advanced functions. We are creating a dynamic page and need a code to be drawn from the corresponding database to be pasted into an HTML placeholder on that page. The database we creating contains various cryptocurrencies and corresponding information. From that data individual pages will be created. For example 1. page is Bitcoin, 2. page is Ethereum etc. One column for currency will contain an iframe code that should be pasted in the place holder on the corresponding dynamic site. We think [login to view URL] function might work as a solution.