PowerShell module for the F5 LTM REST API

Do I need special permissions in F5 to be able to run PS commands?

I am able to get a session

PS C:\Windows\system32> $F5session = New-F5Session -LTMName 192.168.XXX.XXX -LTMCredentials $mycredentials -Passthrough

PS C:\Windows\system32> $F5session

Name

BaseURL

WebSession

----

-------

----------

192.168.XXX.XXX

https://192.168.XXX.XXX/mgmt/tm/ltm/

Microsoft.PowerShell.Commands.WebReq...

but when I try get-pool, i get this

PS C:\Windows\system32> Get-Pool $F5session
Invoke-RestMethodOverride : "401 F5 Authorization Required: Authorization failed:
user=https://localhost/mgmt/shared/authz/users/Mayur.Kirtani resource=/mgmt/tm/ltm/pool verb=GET
uri:http://localhost:8100/mgmt/tm/ltm/pool/ referrer:10.XXX.XXX.XXX sender:10.XXX.XXX.XXX
At C:\windows\system32\windowspowershell\v1.0\Modules\F5-LTM\Public\Get-Pool.ps1:32 char:21
+             $JSON = Invoke-RestMethodOverride -Method Get -Uri $URI -WebSession  ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [Write-Error], WriteErrorException
    + FullyQualifiedErrorId : Microsoft.PowerShell.Commands.WriteErrorException,Invoke-RestMethodOverride

am i missing something?

thanks M