Display HTML content in a Xstore form

Hello everyone!

Is it possible to display HTML content in an Xstore form?

I know that it is achievable in instructions via the following code:

public class SomeOperationName extends Operation {
    @Override
    public IOpResponse handleOpExec(IXstEvent event) {
        return HELPER.getShowMessageResponse(Collections.singletonList(InfoMessage
                .makeRegisterInstructionMessage("<h1>HEADER</h1>")));
    }
}

Can we do something like this in forms? My goal is to display HTML content in a full screen.

I'm using Xstore v18.