VBox shared folders not connecting

When I use the following, in configuration.nix, I get no errors, but it does not connect.

fileSystems."/mnt/vmshare" = {
fsType = “vboxsf”;
device = “vshare”;
options = [ “rw” “nofail” ];
};

When I change the mount point to the following, I get the error shown.

fileSystems."/vmshare" = {
fsType = “vboxsf”;
device = “vshare”;
options = [ “rw” “nofail” ];
};

vmshare.mount - /vmshare
Loaded: loaded (/etc/fstab; generated)
Active: failed (Result: exit-code) since Tue 2022-10-11 00:54:32 MDT; 29ms ago
Where: /vmshare
What: vshare
Docs: man:fstab(5)
man:systemd-fstab-generator(8)
IP: 0B in, 0B out
CPU: 2ms

Oct 11 00:54:32 nixos systemd[1]: Mounting /vmshare…
Oct 11 00:54:32 nixos mount[1969]: /run/current-system/sw/bin/mount.vboxsf: mounting failed with the error: Invalid argument
Oct 11 00:54:32 nixos systemd[1]: vmshare.mount: Mount process exited, code=exited, status=1/FAILURE
Oct 11 00:54:32 nixos systemd[1]: vmshare.mount: Failed with result ‘exit-code’.
Oct 11 00:54:32 nixos systemd[1]: Failed to mount /vmshare.
warning: error(s) occurred while switching to the new configuration

Also, the user includes
extraGroups = [ “networkmanager” “wheel” “vboxfs” “vboxusers”];

Thank you for your help. This is my first try at Nixos. I want to use it on my main desktop and need access to the files to set it up.