This function returns the value of the user property with name propertyName which belongs to the user with user name userName.
If the user doesn't have the property, ""
will be returned.
userProperty(string propertyName, string userName) #Output: Text
The function returns the values of the user property with name propertyName in all the users whose names are contained in userNames.
The output will contain as many texts as users have the property set.
userProperty(string propertyName, string list userNames) #Output: Text list