XF 2.1 Hide a menu item in public navigation from a couple of usergroups

[JamesBrown]

Should be easy, so why am I struggling to do this? I found some conditional statements and they always give me syntax errors. Can someone show an idiot how to hide a menu item from user groups 1 and 2 . Thanks

 

[Kirby]

!$xf.visitor.isMemberOf([1, 2])

 

[JamesBrown]

Thank you @Kirby that worked a treat