how to query out AD enableRemoteControl user properties using powershell script?

Hi, i had been researching about how to query out the AD enableRemoteControl user properties information and also set it information using powershell script for past whole week. 

What I had found, using is VBScript which I do not have a good idea of how to change it to powershell script. Lately I found about powershell command, but it did not work for me. I had been also trying to solve the error, here is my script:

$objSearch = New-Object DirectoryServices.DirectorySearcher
$strADPath = 'LDAP://ou=Power Shell test ,ou= Testing OU,dc=com'
$strGeneralPSFile = "D:\Powershell for AD\general.ps1"
. $strGeneralPSFile
$objSearch.Filter = '(&(objectClass=user)(samaccountname=Noobycy))'

$objSearch.SearchRoot = $strADPath

$objSearch.PageSize = 1000
$objSearch.SearchScope = "subtree" 
$objResults = $objSearch.Findall()

foreach($objResult in $objResults){  
 $objUser = $objResult.GetDirectoryEntry()

#I was trying to get the enableremotecontrol information, to see that whether it is disable or enable.
 $objUser.InvokGet("enableremotecontrol")

#trying to set the enable remote control
 #$objUser.InvokeSet ("enableremotecontrol",1)
 #$objUser.setinfo()
}

this is my error show for invokeGet method:

this is my error show for invokeSet method:

What I found the reason is because I did not install terminal server extension, but once i had update/install the app into the desktop, it still having this error.