General :: Enable - Disable Logging In A Bash Script ?

My objective is pretty simple: To have a variable within a bash script where I can switch between logging to file or screen.

Simple example of what I am trying to do:

Code:

So, as you can see, I have a variable which clears the log path if the user variable vLOG is not 'Y'. This should mean the user can run the script from the command line and view all the output (instead of it going to a log file).

The problem is that with the final line of the script (which ultimately tests the intention), I don't get the required result as the vLOGPATH variable is just passed to echo as text.

I have tried using 'echo -e' and getting some backslashes in there, I have tried using eval but I am either using them incorrectly.