diff --git a/Models/Bill.php b/Models/Bill.php
index 867a4b6..c00784b 100755
--- a/Models/Bill.php
+++ b/Models/Bill.php
@@ -84,7 +84,13 @@ class Bill implements \JsonSerializable
      */
     public int $status = BillStatus::DRAFT;
 
-    private int $paymentStatus = BillPaymentStatus::UNPAID;
+    /**
+     * Bill payment status
+     *
+     * @var int
+     * @since 1.0.0
+     */
+    public int $paymentStatus = BillPaymentStatus::UNPAID;
 
     /**
      * Bill created at.
diff --git a/Theme/Backend/Lang/de.lang.php b/Theme/Backend/Lang/de.lang.php
index d5b6450..f98745f 100755
--- a/Theme/Backend/Lang/de.lang.php
+++ b/Theme/Backend/Lang/de.lang.php
@@ -13,30 +13,41 @@
 declare(strict_types=1);
 
 return ['Billing' => [
+    'Amount'              => 'Betrag',
+    'Billing'             => 'Rechnungsstellung',
+    'CreateBill'          => 'Erstelle Rechnung',
+    'Archive'             => 'Archiev',
+    'Email'             => 'Email',
+    'PazmentPlan'             => 'Zahlplan',
+    'Types'             => 'Typen',
+    'Original'             => 'Original',
     'Address'         => 'Adresse',
     'Addresses'       => 'Adressen',
-    'Africa'          => '#VALUE!',
+    'Africa'          => 'Afrika',
+    'Africa'              => 'Africa',
+    'Currency'            => 'Währung',
+    'Language'            => 'Sprache',
     'AlreadyPaid'     => 'Bereits bezahlt',
-    'America'         => '#VALUE!',
-    'Analyse'         => '#VALUE!',
-    'Articles'        => '#VALUE!',
-    'Asia'            => '#VALUE!',
-    'Attribute'       => '#VALUE!',
-    'BaseTime'        => '#VALUE!',
+    'America'         => 'Amerika',
+    'Analyse'         => 'Analyse',
+    'Articles'        => 'Artikel',
+    'Asia'            => 'Asien',
+    'Attribute'       => 'Attribute',
+    'BaseTime'        => 'Basiszeit',
     'Bills'           => 'Rechnungen',
     'Bonus'           => 'Bonus',
-    'CIS'             => '#VALUE!',
+    'CIS'             => 'CIS',
     'Cashback'        => 'Kennzeichnen',
     'City'            => 'Stadt',
     'Client'          => 'Klient',
     'ClientID'        => 'Kunden ID',
-    'ComparisonTime'  => '#VALUE!',
+    'ComparisonTime'  => 'Vergleichszeit',
     'Confirmation'    => 'Bestätigung',
     'Country'         => 'Land',
     'Created'         => 'Erstellt',
     'CreditCard'      => 'Kreditkarte',
     'CreditNote'      => 'Gutschrift',
-    'Customers'       => '#VALUE!',
+    'Customers'       => 'Kunden',
     'Date'            => 'Datum',
     'Delivery'        => 'Die Zustellung',
     'DeliveryNote'    => 'Lieferschein',
@@ -44,10 +55,10 @@ return ['Billing' => [
     'Discount'        => 'Rabatt',
     'DiscountP'       => 'Rabatt %',
     'Due'             => 'Fällig',
-    'Europe'          => '#VALUE!',
-    'Filter'          => '#VALUE!',
+    'Europe'          => 'Europa',
+    'Filter'          => 'Filter',
     'Freightage'      => 'Fracht',
-    'General'         => '#VALUE!',
+    'General'         => 'Allgemein',
     'Gross'           => 'Grob',
     'Invoice'         => 'Rechnung',
     'Invoices'        => 'Rechnungen',
@@ -60,7 +71,7 @@ return ['Billing' => [
     'Name'            => 'Name',
     'Net'             => 'Netz',
     'Offer'           => 'Angebot',
-    'Other'           => '#VALUE!',
+    'Other'           => 'Sonstige',
     'Payment'         => 'Zahlung',
     'Postal'          => 'Post',
     'Prepaid'         => 'Vorausbezahlt',
@@ -69,9 +80,9 @@ return ['Billing' => [
     'Profit'          => 'Profitieren',
     'Quantity'        => 'Menge',
     'Recipient'       => 'Empfänger',
-    'Region'          => '#VALUE!',
-    'Rep'             => '#VALUE!',
-    'Sales'           => '#VALUE!',
+    'Region'          => 'Region',
+    'Rep'             => 'Vertreter',
+    'Sales'           => 'Umsatz',
     'Select'          => 'Wählen',
     'Shipment'        => 'Sendung',
     'Source'          => 'Quelle',
@@ -82,7 +93,7 @@ return ['Billing' => [
     'Total'           => 'Gesamt',
     'Type'            => 'Typ',
     'Upload'          => 'Hochladen',
-    'Value'           => '#VALUE!',
+    'Value'           => 'Wert',
     'Variation'       => 'Variation',
     'Zip'             => 'Reißverschluss',
 ]];
diff --git a/Theme/Cli/Lang/de.lang.php b/Theme/Cli/Lang/de.lang.php
new file mode 100644
index 0000000..776cf84
--- /dev/null
+++ b/Theme/Cli/Lang/de.lang.php
@@ -0,0 +1,16 @@
+<?php
+/**
+ * Jingga
+ *
+ * PHP Version 8.1
+ *
+ * @package   Modules\Localization
+ * @copyright Dennis Eichhorn
+ * @license   OMS License 2.0
+ * @version   1.0.0
+ * @link      https://jingga.app
+ */
+declare(strict_types=1);
+
+return ['Billing' => [
+]];
diff --git a/tests/Models/BillTest.php b/tests/Models/BillTest.php
index 715d66c..00b361f 100755
--- a/tests/Models/BillTest.php
+++ b/tests/Models/BillTest.php
@@ -48,13 +48,13 @@ final class BillTest extends \PHPUnit\Framework\TestCase
         self::assertEquals('', $this->bill->info);
         self::assertInstanceOf('\Modules\Billing\Models\NullBillType', $this->bill->type);
         self::assertInstanceOf('\DateTimeImmutable', $this->bill->createdAt);
-        self::assertInstanceOf('\DateTime', $this->bill->performanceDate);
+        self::assertEquals(null, $this->bill->performanceDate);
         self::assertNull($this->bill->send);
         self::assertNull($this->bill->client);
         self::assertNull($this->bill->supplier);
         self::assertEquals([], $this->bill->getVouchers());
         self::assertEquals([], $this->bill->getTrackings());
-        self::assertEquals([], $this->bill->getMediaByType(0));
+        self::assertEquals([], $this->bill->getFileByType(0));
 
         self::assertEquals('', $this->bill->shipTo);
         self::assertEquals('', $this->bill->shipFAO);
@@ -70,14 +70,14 @@ final class BillTest extends \PHPUnit\Framework\TestCase
         self::assertEquals('', $this->bill->billZip);
         self::assertEquals('', $this->bill->billCountry);
 
-        self::assertInstanceOf('\phpOMS\Localization\Money', $this->bill->netSales);
-        self::assertInstanceOf('\phpOMS\Localization\Money', $this->bill->grossSales);
+        self::assertInstanceOf('\phpOMS\Stdlib\Base\FloatInt', $this->bill->netSales);
+        self::assertInstanceOf('\phpOMS\Stdlib\Base\FloatInt', $this->bill->grossSales);
 
-        self::assertInstanceOf('\phpOMS\Localization\Money', $this->bill->netProfit);
-        self::assertInstanceOf('\phpOMS\Localization\Money', $this->bill->grossProfit);
+        self::assertInstanceOf('\phpOMS\Stdlib\Base\FloatInt', $this->bill->netProfit);
+        self::assertInstanceOf('\phpOMS\Stdlib\Base\FloatInt', $this->bill->grossProfit);
 
-        self::assertInstanceOf('\phpOMS\Localization\Money', $this->bill->netCosts);
-        self::assertInstanceOf('\phpOMS\Localization\Money', $this->bill->grossCosts);
+        self::assertInstanceOf('\phpOMS\Stdlib\Base\FloatInt', $this->bill->netCosts);
+        self::assertInstanceOf('\phpOMS\Stdlib\Base\FloatInt', $this->bill->grossCosts);
 
         self::assertEquals(0, $this->bill->payment);
         self::assertEquals('', $this->bill->paymentText);