Add ManagementRoleEntry to Role Error

I created a Role called "Failover Role" and added the Move-ActiveMailbox Role Entry from the Database Group to that role. I am trying to add the Test-ServiceHealth Role Entry but I am getting a failure that the Test-ServiceHealth role entry wasn't found on the "Databases" management role.

Any idea as I am sure I am just not doing it right.

--------- STEPS I TOOK THUS FAR------

New-ManagementRole -Parent "Databases" -Name "Failover Role"

Removed all the managementrolentries except the Move-ActiveDatabase cmdlet

New-ManagementRoleAssignment -Name "Failover Role" -SecurityGroup "Failover Role SG" -Role "Failover Role"

Get-ManagementRoleEntry Monitoring\Test-ServiceHealth | Add-ManagementRoleEntry -Role "Failover Role" (<-- This errors out)