Combine (Merge) Two Single Lines Text Fields Into One

Say I have 2 fields: Field A and Field B. They are both single line text fields. I want another field, Field C which would also be a single line text field, to calculate Field A value + FieldB value resulting in a concatenated Field C value. I can't so far figure out how this works.

Hi Rob, no they are text strings. For example, "Home" + "Run" could go into a third field "Home Run". I want to collect a few values from the form and store them in a single field for later use.

This code snippet should do the trick for you:

https://gist.github.com/spivurno/5816734

So add two single line text fields and then a hidden field to your form. Set your hidden field to be able to populate dynamically and then simply place the merge tags into the dynamic population area and on form submission it will combine the fields into this hidden field.