Health Analyzer - People search relevance is not optimized when the Active Directory has errors in the manager reporting structure.

Greetings!

Have this error on Sharepoint Server 2010 and would like to get rid of it.

I have used this commands in Sharepoint Shell:

$upaProxy = Get-SPServiceApplicationProxy | ? {$_.TypeName -like “*User Profile Service Application*”}
Add-SPProfileLeader -ProfileServiceApplicationProxy $upaProxy -Name "DOMAINNAME\DIRECTOROFTHEFIRM"

I receive an error message that user does not exist.
This domain user sure exist in AD.
I have ran the command with domain admin account.

What am I doing wrong?

With best regards

bostjanc