Unable to create AG Listener with public load balancer

Hi everyone, 

I'm following this link to setup a public load balancer with an AG Listener. 

https://msdn.microsoft.com/en-us/library/azure/dn425027.aspx

However, when I run this script, I'm getting an error. It used to work previously, not sure why it's not working now.

Set-ClusterParameter : Unable to save property changes for 'IPResourceName'.
    The parameter is incorrect

# Define variables
$ClusterNetworkName = "<MyClusterNetworkName>" # the cluster network name (Use Get-ClusterNetwork on Windows Server 2012 of higher to find the name)
$IPResourceName = "<IPResourceName>" # the IP Address resource name
$ILBIP = “<X.X.X.X>” # the IP Address of the Internal Load Balancer (ILB)

Import-Module FailoverClusters

Get-ClusterResource $IPResourceName | Set-ClusterParameter -Multiple @{"Address"="$ILBIP";"ProbePort"="59999";"SubnetMask"="255.255.255.255";"Network"="$ClusterNetworkName";"OverrideAddressMatch"=1;"EnableDhcp"=0}