Reclassifying Vector Field using python parser in field calculator

Question

I am attempting to reclassify a field in ArcMap using python within field calculator.

Below is screenshot of how it is set up. when I run the reclassify I get an error, and my prepossessing results give me an error in syntax. Also attached is the geprocessing results. I am sure this is a very simple fix, I am just very new to python.

enter image description here enter image description here

Answer 1

When calling your function, put the fields between exclamation points

Reclass(!Map Value!)

In your function, use a single word for your variable name

def Reclass(Map_Value):