How to force a Simulink Function to re-use the same argument for Input/Output

I am creating a Simulink Function and want it to reuse the same argument for both input and output variables. 

How can I do this?

Answer 1

[MathWorks Support Team]

This can be accomplished by assigning identical names to both the input and output arguments of a Simulink function. Please see the following for an example:

With the inside of the Simulink Function looking like this:

For more information on Simulink Functions please refer to the following documentation:

https://www.mathworks.com/help/simulink/slref/simulinkfunction.html