problem assigning declarative values in asp:hyperlink. error: this is not scriptlet. will output as plain text

I am trying to do this:

<asp:HyperLink NavigateUrl='<%= WebContext.RootUrl %><%= WebContext.CurrentUser.UserName %>' runat="server" Text='<%= GetProfileImage(WebContext.CurrentUser.AccountId) %>'></asp:HyperLink> 

But am getting the error:

this is not scriptlet. will output as plain text.

when I mouse over my declarative statements.

Any ideas? Thanks.