Changes the current working directory.
FileChangeDir ( "path" )
| path | The path to make the current working directory. | 
| Success: | 1. | 
| Failure: | 0 if working directory not changed. | 
@WorkingDir is changed on successful return.
#include <MsgBoxConstants.au3>
Example()
Func Example()
    ; Display the current working directory.
    MsgBox($MB_SYSTEMMODAL, "", "The current working directory: " & @CRLF & @WorkingDir)
    ; Set the working directory @WorkingDir to the @WindowsDir directory. This is normally C:\Windows.
    FileChangeDir(@WindowsDir)
    ; Display the working directory after setting it to the windows directory.
    MsgBox($MB_SYSTEMMODAL, "", "The current working directory: " & @CRLF & @WorkingDir)
EndFunc   ;==>Example