diff --git a/src/main/java/database/transaction/SendingTransaction.java b/src/main/java/database/transaction/SendingTransaction.java
index be2f20c..a2591eb 100644
--- a/src/main/java/database/transaction/SendingTransaction.java
+++ b/src/main/java/database/transaction/SendingTransaction.java
@@ -5,13 +5,13 @@ public class SendingTransaction {
     private String source_user_pwd;
     private String transaction_from;
     private String transaction_to;
-    private double transaction_amount;
+    private String transaction_amount;
     private String transaction_unit;
 
     public SendingTransaction() {
     }
 
-    public SendingTransaction(String source_user_hash, String source_user_pwd, String transaction_from, String transaction_to, double transaction_amount, String transaction_unit) {
+    public SendingTransaction(String source_user_hash, String source_user_pwd, String transaction_from, String transaction_to, String transaction_amount, String transaction_unit) {
         this.source_user_hash = source_user_hash;
         this.source_user_pwd = source_user_pwd;
         this.transaction_from = transaction_from;
@@ -53,11 +53,11 @@ public class SendingTransaction {
         this.transaction_to = transaction_to;
     }
 
-    public double getTransaction_amount() {
+    public String getTransaction_amount() {
         return transaction_amount;
     }
 
-    public void setTransaction_amount(double transaction_amount) {
+    public void setTransaction_amount(String transaction_amount) {
         this.transaction_amount = transaction_amount;
     }
 
diff --git a/src/main/java/restService/TransactionResource.java b/src/main/java/restService/TransactionResource.java
index 8aff37c..957e5d3 100644
--- a/src/main/java/restService/TransactionResource.java
+++ b/src/main/java/restService/TransactionResource.java
@@ -21,7 +21,7 @@ public class TransactionResource {
         try{
             HashMap mapResponse = transactionImplementation.sendTransaction(SendingTransaction.getSource_user_hash(), SendingTransaction.getSource_user_pwd(),
                     SendingTransaction.getTransaction_from(),SendingTransaction.getTransaction_to(),
-                    SendingTransaction.getTransaction_amount(),SendingTransaction.getTransaction_unit());
+                    Double.parseDouble(SendingTransaction.getTransaction_amount()),SendingTransaction.getTransaction_unit());
 
             if(Boolean.parseBoolean(mapResponse.get("success").toString())){
                 return ResponseEntity.status(HttpStatus.OK).body("{\"response\":\""+mapResponse.get("message")+"\"}");