I'm not sure what you are looking for here.
Are you saying you intended to record where the user is prompted for text and it didn't work?
Or are you instead asking how to insert a prompt for the user to insert text?
For the recording bit, try ensuring that Text Entry Boxes are selected. For inserting one, click Insert > Standard Objects > Text Entry Box.
Helpful and Handy Links
Hello and thank you for your attention
i don't know how can i set my setting pannel to do this work.
i want record a training mode and meantime of it user prompt two number in a dialogBox.
i want to captivate do this work attomatically.