I'm trying to create some logic that will hold a variable in memory and several threads may try and update it.  So, I want to make sure only 1 thread at a time can access the variable and update it, then release the lock on it.  I see in the library I can do the following code below, but I cannot find any documentation on how to use it.  Looking for some code samples on how to use it.
                if (myMutex == ^null)
                    myMutex = new @Threading.Mutex()