Assign Custom Properties

I would like to assign custom properties to the nodes found via query.  As an example I would like to assign all devices in the 10.22.0.0/16 range the custom property Environment "QA".  The custom properties are already in place.  The script returns the Uri's I am after.  I do not know how to assign the new custom properties however.  

$ErrorActionPreference = 'Stop'

#Add the snapin
Add-PSSnapin SwisSnapin

#create a connection to solarwinds

$hostname = 'xx'
$username = 'xx'
$password = 'XX'

#swis = Connect-Swis -Hostanme $hostname -Trusted

$swis = Connect-Swis -Hostname $hostname -Username $username -Password $password

$query = Get-SwisData $swis "SELECT uri FROM Orion.Nodes WHERE ip_address LIKE '10.22.%'"

$query

swis://XX.net/Orion/Orion.Nodes/NodeID=151
swis://XX.net/Orion/Orion.Nodes/NodeID=116
swis://XX.net/Orion/Orion.Nodes/NodeID=146