diff --git a/functions/public/Invoke-WPFImpex.ps1 b/functions/public/Invoke-WPFImpex.ps1
index d97f025e..32539750 100644
--- a/functions/public/Invoke-WPFImpex.ps1
+++ b/functions/public/Invoke-WPFImpex.ps1
@@ -56,8 +56,7 @@ function Invoke-WPFImpex {
                 }
             }
         }
-
-        $flattenedJson = [string]$flattenedJson
+        
         Invoke-WPFPresets -preset $flattenedJson -imported $true
     }
 }
diff --git a/functions/public/Invoke-WPFPresets.ps1 b/functions/public/Invoke-WPFPresets.ps1
index 90493899..1535ffe5 100644
--- a/functions/public/Invoke-WPFPresets.ps1
+++ b/functions/public/Invoke-WPFPresets.ps1
@@ -17,7 +17,7 @@ function Invoke-WPFPresets {
 
     param (
         [Parameter(position=0)]
-        [string]$preset = "",
+        [Array]$preset = "",
 
         [Parameter(position=1)]
         [bool]$imported = $false,
@@ -51,7 +51,7 @@ function Invoke-WPFPresets {
         }
 
         # Check if the checkbox name exists in the flattened JSON hashtable
-        if ($CheckBoxesToCheck.Contains($checkboxName)) {
+        if ($CheckBoxesToCheck -contains $checkboxName) {
             # If it exists, set IsChecked to true
             $sync.$checkboxName.IsChecked = $true
             Write-Debug "$checkboxName is checked"