Letter to Fillable form

I have a letter template that I would like to make into a form to feed into the Smartsheet platform. I have all of the fillable text fields imported however they dont expand depending on the data given so words from the data source are being cut off in the process. Is there a way to make the text field automatically expand depending on the text entered into the field? (and i am talking about a horizontal fill that matches the letter format and not a box with scroll text.