The term "Snippet" has a specific meaning in LabVIEW. Open LabVIEW, click on Help, LabVIEW Help, search for VI Snippet. Follow the clear directions, create the .PNG that LabVIEW (not the Clipboard, not Windows, not Word) creates of your code. That is what we mean by a "LabVIEW Snippet" -- it is both Picture and code, and it is the code that we need.
Remember, you are asking for our help, so you (should) want to make it as easy as possible for us to examine and test out your code. That means, you provide the code in some fashion -- you don't make us open LabVIEW, look at your code, switch to the Block diagram, try to lay down the functions and wires exactly has you have done (making possibly the same mistakes, like running a wire underneath a function without connecting it).
Provide us with your code. I apologize for not simply saying not a picture (and then giving the exception, which confused you ...). Providing the entire VI is the best, as sometimes (particularly if there is a problem with the code) the culprit is not the 3 or 4 functions that "seem obvious", but the way that the wires come into the structure that we can't see if you only show a small piece of code.
Bob Schor
