Setting focus to text entry box in Storyline

I think I've been trying to accomplish a similar setting of focus in my Storyline project, unless I totally misunderstand this thread. The recommendations above sound as if placing a text box at the bottom of the timeline will cause the focus to be in that box...but that does not happen. I have a short educational game (for 1st graders) that requires them to listen to a short animation (with a sentence and word they are to spell) and then they type the word in a text box. I do not want them to have to click in the text box before typing. All slides (with the video) are in a question bank and I've:

• used all fill-in-the-blank questions
• used the fill-in-the-box question "Text Entry" (text box?) for students to enter their answer and  
• moved the "Text Entry" object to the bottom of the timeline for each slide
• I've also used a trigger to set the initial text ("Click and type the word here") in the "Text Entry" object. That is, the trigger reads: Set TextEntry1 equal to Click and type the word here When the timeline starts."

I wonder if the fill-in-the-blank "Text Entry" object is different from the "Text Box" object so that what I'm trying to accomplish is not possible. I also note that the "Text Entry" object does NOT allow students to use the Backspace key to correct errors.They must swipe over the letter(s) to replace and press Delete, which is really a hassle for 1st graders.

So I'm stumped. Suggestions?

If it helps to view the file, you can download the storyline file at https://www.box.com/s/9fr7dnl1fopfd4wztff8