diff --git a/DBInteraction.cs b/DBInteraction.cs
index 0460c4b..3a6eac9 100644
--- a/DBInteraction.cs
+++ b/DBInteraction.cs
@@ -10,7 +10,7 @@ namespace CryptoCalc
 {
     public class DBInteraction
     {
-        public static void SaveData<T>(ref T data) where T : DBClasses
+        public static void SaveData<T>(T data) where T : DBClasses
         {
             if (data is null)
             {
diff --git a/MainWindow.xaml.cs b/MainWindow.xaml.cs
index 1ff8c63..26d9f68 100644
--- a/MainWindow.xaml.cs
+++ b/MainWindow.xaml.cs
@@ -22,19 +22,16 @@ namespace CryptoCalc
 
         private void saveButton_Click(object sender, RoutedEventArgs e)
         {
-            genericT = DummyTransaction();
-            DBInteraction.SaveData(ref genericT);
+            DBInteraction.SaveData(DummyTransaction());
         }
         private void saveWalletButton_Click(object sender, RoutedEventArgs e)
         {
-            genericW = DummyWallet();
-            DBInteraction.SaveData(ref genericW);
+            DBInteraction.SaveData(DummyWallet());
         }
 
         private void saveButtonFromInput_Click(object sender, RoutedEventArgs e)
         {
-            genericT = new(inputCurrency.Text, Convert.ToSingle(inputAmount.Text), inputType.Text);
-            DBInteraction.SaveData(ref genericT);
+            DBInteraction.SaveData(new Transaction(inputCurrency.Text, Convert.ToSingle(inputAmount.Text), inputType.Text));
         }
 
         private void readButton_click(object sender, RoutedEventArgs e)
@@ -49,7 +46,6 @@ namespace CryptoCalc
         {
             string query = $"SELECT * from {genericT.DBTableName} WHERE {nameof(genericT.Currency)}=\'{currencyText.Text}\'";
             IEnumerable<Transaction> transactions = transactionDB.QueryData(genericT.DBTableName, query);
-            //transactions = DBInteraction.LoadTransactionsOfCurrency(currencyText.Text);
             transactionsFoundListBox.Items.Clear();
             foreach (Transaction x in transactions)
             {
@@ -57,12 +53,6 @@ namespace CryptoCalc
             }
         }
 
-        //private IEnumerable<Transaction> ReadTransactionFromDB()
-        //{
-        //    Transaction t = new();
-        //    return transactionDB.LoadAllData(t.DBTableName);
-        //}
-
         private Transaction DummyTransaction()
         {
             Transaction t = new();