How do I write/update the value of tag2 in Kepware using PowerShell. I am getting the error:

Invoke-RestMethod : The remote server returned an error: (400) Bad Request.
At line:21 char:13
+ $response = Invoke-RestMethod -Uri $kepwareServerUrl -Method Put -Bod ...
+             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (System.Net.HttpWebRequest:HttpWebRequest) [Invoke-RestMethod], WebException
    + FullyQualifiedErrorId : WebCmdletWebResponseException,Microsoft.PowerShell.Commands.InvokeRestMethodCommand

Here is my code:

   $kepwareServerUrl = 'http://localhost:57412/config/v1
   /project/channels/Channel1/devices/Device1/tags/Tag2'
    $newValue = 10
 
    $payload = @{
    "v" = $newValue
    } | ConvertTo-Json

 
    $username = "Administrator"
   $password = ""
   $encodedCredentials = 
 


  [Convert]::ToBase64String([Text.Encoding]::ASCII.GetBytes
  ("${username}:${password}"))

 
  Write-Host "Payload: $payload"
  Write-Host "URL: $kepwareServerUrl"

 
  try 
  {
     $response = Invoke-RestMethod `
    -Uri $kepwareServerUrl -Method Put `
    -Body $payload  `
    -ContentType "application/json" `
    -Headers @{Authorization=("Basic 
     $encodedCredentials")}
     Write-Host "Tag value updated successfully."
    } 
    catch 
    {
      Write-Host "Failed to update the tag value. Error: $_"
    }

  
    if ($response -eq $null) {
     Write-Host "Failed to update the tag value."
    }  
    else 
    {
       Write-Host "Tag value updated successfully."
    }