filter the users with the company name attribute

[saf-cop]

Hi
I'm trying to get the users with the company name attribute  'COP'  as :
https://graph.microsoft.com/v1.0/users?$filter=companyName eq 'cop' &$count=true

the error is : 

[#2 · Accepted solution]

That's and "advanced query", so you need to add the consistencyLevel header.