How do I correctly persist a Powershell object to JSON when the object was added using Add-Member to a child item? -

i'm running bit of challenge powershell code, simplified , sanitized version of shown here:

$outer = ("{""child"": {""grandchild"": {}}}" | convertfrom-json ) $inner = $outer.child.grandchild $newid = [guid]::newguid(); $nested = ("{     ""id"": ""$newid"",     ""name"": ""the name goes here"" }" | convertfrom-json)  $membernametoadd = "nested" $inner | add-member -membertype noteproperty -name $membernametoadd $nested  $inner | convertto-json | out-file "inner.json" $outer | convertto-json | out-file "outer.json" 

my specific challenge way dynamically added inner item getting persisted. output $inner (as sent inner.json) matches expect:

{     "nested":  {         "id":  "741b6810-000e-4461-8ab8-6573e0d0b4a7",         "name":  "the name goes here"         } } 

unfortunately output $outer serialized follows:

{     "child":  {         "grandchild":  {             "nested":  "@{id=741b6810-000e-4461-8ab8-6573e0d0b4a7; name=the name goes here}"          }     } } 

clearly results in situation when serialized file (using convertfrom-json) can no longer access properties of "nested".

what have done wrong, , how can fix it?

quickly problem should come default depth type :

$inner | convertto-json -depth 6 | out-file "inner.json" $outer | convertto-json -depth 6| out-file "outer.json" 

in fact default stop parsing in depth 3, after gives tostring() value of object.