How do i make the text show up in the text field of my program

 on buttonClick_(sender)
		tell application "System Events"
			set theTextField to word 25 of (do shell script "curl checkip.dyndns.org")
		end tell
	end buttonClick_

when i click the next button i wan’t the IP to show up in the textfield

You use setStringValue_ and pass in the string you want in your text field. You should read the docs for NSTextField and it’s parent class, NSControl to see what methods are available.

Ric