diff --git a/SnipeitPS/Private/Invoke-SnipeitMethod.ps1 b/SnipeitPS/Private/Invoke-SnipeitMethod.ps1
index b6deb74..4fedbef 100644
--- a/SnipeitPS/Private/Invoke-SnipeitMethod.ps1
+++ b/SnipeitPS/Private/Invoke-SnipeitMethod.ps1
@@ -35,7 +35,7 @@
         }
 
         #To support images "image" property have be handled before this
-        $Body = $Body | ConvertTo-Json
+        if($Body) { $body = $Body | ConvertTo-Json }
 
         $_headers = @{
             "Authorization" = "Bearer $($token)"
@@ -66,7 +66,7 @@
 
         $script:PSDefaultParameterValues = $global:PSDefaultParameterValues
 
-        Write-Debug $Body
+        Write-Debug "$($Body | ConvertTo-Json)"
 
         # Invoke the API
         try {
diff --git a/SnipeitPS/Public/Set-SnipeitLicenseSeat.ps1 b/SnipeitPS/Public/Set-SnipeitLicenseSeat.ps1
index 6e191c5..9a42a09 100644
--- a/SnipeitPS/Public/Set-SnipeitLicenseSeat.ps1
+++ b/SnipeitPS/Public/Set-SnipeitLicenseSeat.ps1
@@ -46,9 +46,11 @@ function Set-SnipeitLicenseSeat()
         [int]$seat_id,
 
         [Alias('assigned_id')]
-        [int]$assigned_to,
 
-        [int]$asset_id,
+        [Nullable[System.Int32]]$assigned_to,
+
+
+        [Nullable[System.Int32]]$asset_id,
 
         [string]$note,