Userinfo for profile field?

[Sylvus]

Anyone know what the correct variable for a user's profile field?

For instance, I can get $userinfo[username] or $userinfo[userid] to work just fine but what is the $userinfo for a particular profile field?

I've tried $userinfo[profilefieldid1] and $userinfo[field1]

I'm not looking for $post[field1] or $bbuserinfo[field1] but the variable that goes with $userinfo

Thanks for any help.