RM 2.2 HTML on Resource tab

[Andy.N]

I created a resource field that is its ow tab with rich text box option. I'd like to write some html in there to display some chart library.
Looks like it doesn't allow html.
Is there a way around this such as calling a template where I can use the html code in that template?

 

[Andy.N]

In other words, can we hook into some template or something using PHP callback option here