Add new value to exist extensible Attribute

[#1]

Hello all,

I have an extensible Attribute (Location )with some values

each day there is new location added to our system so i extract and add them manually to Infoblox  

I made some research but i didn´t find solution to add new value to my List_values 

I want to know if it's possible to do this automatically i m using WAPI V2.10

Thanks

[#2]

When adding a location, you need to pull down the current list as an array, add the new one to the array, and then replace the list with the new array.  There isn't a way to append the list in-place.

[#3]

i extract the values_List im Array

$ListValues=Invoke-WebRequest -Uri "https://x.x.x.x/wapi/v2.10/extensibleattributedef?name=Location&_return_fields=list_values" -Credential $Credential -Method GET -ContentType application/json

$List= ConvertFrom-Json $ListValues.Content

$ListArray=$List.list_values

[System.Collections.ArrayList]$NewListArray=$ListArray

$NewListArray.add("New Location")

But Now how can i replace the list with the new Array 

Could you help me please

Thanks

[#4]

did you ever get an answer to this or this working?  I am in the same spot.