Hide Text field in PDF Adobe form

Hi Good day,

i have text field where it has 50 lines in the text field.

i want to hide this TEXT FIELD based on a condition

ex : If PowerOn = 'X'

           Display TEXT FIELD.

      eleseif POWERON = ' '.

           Dont display.

      endif.

i have searched but could only find only FIELDS and not TEXTFIELD.

Your input will be highly appriciated.

Thank you,

J.