Oops. I’m sorry…need more coffee. 
There is no equal sign between return and the variable you are returning. An equal sign (assignment operator) would only be used if you are assigning a value to a variable.
I’ve edited your post to improve the readability of the code. When you enter a code block into a forum post, please precede it with three backticks to make it easier to read.
You can also use the “preformatted text” tool in the editor (</>) to add the backticks.
See this post to find the backtick on your keyboard.
Note: Backticks (`) are not single quotes (').