underlining in fillable form text field
Good Afternoon,
I am new to Adobe, and have acrobat pro dc right now. I have text field that is in my filliable form, and i want the text to be underlined when someone types in it. Right now, i have been placing lines physcially under the text field box, but i would love to know a way to have the text just automatically be underlined. The only solution i have found was from 2010 in this forum and its suggestions are no longer a part of DC that i can see. Can someone help me out. I attached a picture below of what i mean.Here is my test text field box and when someone clickes in there to type i want it to be underlined. I hope i have explained this well enough so you understand what i mean. Thank you in advance. 
