How to update App.HTMLHeader

Hello All,

I am seeing several tutorials that talk about setting the App.HTMLHeader property, but when I try I am told that I can’t. I get a message that says “can’t assign a value to this property.”

For example, this tutorial: https://forum.xojo.com/23367-tutorial-using-css-in-webapps-to-make-your-webapp-more-beautifu/0

What am I doing wrong or misunderstanding?

Thanks.

You set it in the IDE itself.

Thanks Greg…I was missing that.