Text entry without a Submit button

Thank you all.
Dennis, your approach was interesting, and I thought I might be able to use it but the character string I am forced to work with is a specific 5 numeral string that starts and ends with a zero. Which wont work because if I make the zero key stroke cause the action to fire, it will do it on the first one and not the last. Unfortunately the only way to use this technique is to come up with an other example from my app where there are no repeating numerals. Not possible at this point.

The thing is I am trying to create a simulation of a computer app, that automatically generates or displays a result (my next slide) when the user enters a string of five numerals into the text field.

I know how to do this in a competing development tool, but it looks like it is just not possible in Storyline.