powershell - Comparing 2 arrays of objects properties, adding property to 1 object -

my first question here. have script 2 arrays of objects 1 property object1 match 1 property object 2. when properties match, object1 gets new property based on property in object2. range of properties can around 5-20 different ones , array holding object1 can contain 100+ objects if there better way other double loops great, still new handling/comparing objects in way.

so far have doesn't seem work.

foreach ($vm in $vms)  {  foreach ($csv in $csvs)   {   if ($vm.location -eq $csv.ownernode)     {$vm = $vm | add-member -membertype noteproperty -name csv -value $csv.name}      }  } 

edit more background, posted further down reason chose use objects need add more , more properties scrip runs, @ end use them (around 4-5 properties per object) sort them , different actions based on different properties.

if properties need objects in $csvs ownernode , name properties, might speed process (and limit memory footprint) creating hashtable use ownernode key , name value (assuming both properties of type string):

$csvlookup = @{}  $csvs |foreach-object {     $csvlookup[$_.ownernode] = $_.name }  # no need anymore remove-variable csvs  foreach($vm in $vms){     if($csvlookup.containskey($vm.location)){         $vm = $vm |add-member -membertype noteproperty -name csv -value $csvlookup[$vm.location] -passthru     } }