Your map looks as though it should be displaying the directions. Were you ever able to see the directions portion? If so please explain what edits you have made. If you have not see the directions on the page at all what is the version of Pro Maps you are using? This info can be found in the Extension Manager.
If your directions are bound to the form elements then it should display without a problem when a user enters values into the form. You could even make it so the directions won't show until after a user enters an address. If you can please post back with a copy of this page and include your google_javascript folder so we can test this with your own pages.