Thanks guys,
I understand my error now
adding the = after return and removing the " resolved my issue. In the link the very first code block function does not use an = sign after return, which I assume this is a versioning difference?
I also got confused with an example I tried using to start my journey with was an example of python code in a code block which used the quotes. I started with python and switch my thoughts to DS functions, this with the confusion of the equal sign, I got all messed up.
Thanks again.,