Name on Certificate

UKNU wrote:

All you need is a show action on your certificate page which changes the contents of a text box to reflect what the user puts in on the sign in page.If you use an entry field on the sign in page called 'first name' on your certificate page have a text box call fname. Have an action to 'on show, change contents 'fname' to 'first name'. I've been trying to set up exactly this -- create an Action to change a text box to show the contents of an entry field that is elsewhere -- and all I can see in the list of items of New Contents, when setting up an Action of Change Contents, are variables. I can't see and select the entry field into which I want my students to put their name.