So here's my 'if not' part of my code:

```
:open
set/p g=Choice:
if %g%== 1 goto FNVEnd
if %g%== 2 goto KSPEnd
if %g%== 3 goto SKYPEEnd
if not %g%==1|2|3 goto Correct2

:Correct2
cls
echo Welcome.
timeout 3
goto Open

```

Everything is working except the 'if not' part, please help!