Hello!
This post is in draft mode from several days. So, today is Saturday and surely I will not upset anyone with this tip. Let’s start with a simple question,
Really you don’t know $ReturnValue?
If you don’t know, perhaps the best way to present it is with this video.
Now with Visual Studio 2013, we have the ability to evaluate the result of the output of a function when the execution ends. This value is usually available at the AUTOS panel, or if you put a break point in the output of a function key and apply the value of $ReturnValue in the Immediate panel, you can have it.
Cool!
Greetings @ Home
El Bruno
El Bruno 
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