HELP I made a function named OUTPUT but I get a error

sould you add a $ to end of output because it being used as a string like this output$="hello"

and if im reading it right you defind your function as main_void

here a image of one way to defind a function using def on how to write it.

Heres the Output function

put () around "Hello" so it can be used as an input variable

THANKS!!!!!