Redmine

Hello.

I've created a plugin for our staff and it works fine.
Then I hope to set confirmation message when clicking this plugin's menu, like link_to method does.

The code is:

menu :top_menu, :my_plugin, {:controller => 'my_plugin', :action => 'my_action'},
    :last => true, :caption => 'My Plugin',
    :html_options => {:confirm => 'Go to My Plugin!'}

But this failed.
I could not find any other sample plugins with using html_options.
Do I have misunderstanding?

Any help will be appreciated.