Load *.txt files to fielda (textbox)?

Probably a stupid question - Way too many coffees today and cannot get this to work… ok…

this is what I dont know how to do… [MX 2004]

When [onrelease] of button 1 I want button1.txt to be displayed within my dynamic text field [box]

the same would go if user hit button 2…

any advice/ideas

thanks kindly:ogre: