Custom “Restricted” text

Hello,

If a user come to a restricted page, a text will be displayed.
Like: “You not allowed, to see this page. If you want to see this, please CONTACT us!”
Now, i tried, to add a hyper link on the word “CONTACT”.
I put the following text into the textbox in the UAC Settings:
You not allowed, to see this page. If you want to see this, please CONTACT us!
But this doesn’t work.
Is there a workaround for this?