Date Entry and Triggers on a Try Mode Simulation

I am new to Storyline (worked with Rise previously), and am struggling to do a Try Mode Simulation. The recording did not capture any text entries to convert to slides (only clicks, or click & drag), so I am having to insert Data Entry text boxes where I need them. Question 1: Do I need to convert to freeform slide to confirm that learner types in correct word? Right now it is a Variable with default value left blank. I have zero experience with variables. Question 2: What is the best way to trigger an advance to next slide once the learner types in the correct word? There is a next button player trigger that the Try Mode created automatically, but I don't want to use that unless there is no better way. Slide 2.5 in Try Mode scene. Any help would be greatly appreciated.