diff --git a/src/ATBAPP/ATBDeviceControllerPlugin.cpp b/src/ATBAPP/ATBDeviceControllerPlugin.cpp
index 76ecb26..156a4f3 100644
--- a/src/ATBAPP/ATBDeviceControllerPlugin.cpp
+++ b/src/ATBAPP/ATBDeviceControllerPlugin.cpp
@@ -67,6 +67,8 @@ ATBDeviceControllerPlugin::ATBDeviceControllerPlugin(QObject *parent)
 
     this->currentSelectedTicketType = 0;
     this->currentCashState = CASH_STATE::CACHE_EMPTY;
+
+    this->cashStartAmountInt = 0;
 }
 
 ATBDeviceControllerPlugin::~ATBDeviceControllerPlugin() {}
@@ -201,11 +203,11 @@ void ATBDeviceControllerPlugin::requestStartCashInput(const QString & amount)
 {
     qCritical() << "Start Cash vending with amount = " << amount;
 
-    uint32_t amountInt = static_cast<uint32_t>(amount.toUInt());
+    this->cashStartAmountInt = static_cast<uint32_t>(amount.toUInt());
 
-    if (amountInt == 0) amountInt = UINT_MAX;
+    if (this->cashStartAmountInt == 0) this->cashStartAmountInt = UINT_MAX;
 
-    hw->cash_startPayment(amountInt);
+    hw->cash_startPayment(this->cashStartAmountInt);
 }
 
 void ATBDeviceControllerPlugin::requestStopCashInput()
diff --git a/src/ATBAPP/ATBDeviceControllerPlugin.h b/src/ATBAPP/ATBDeviceControllerPlugin.h
index b07e209..9c1a0cc 100644
--- a/src/ATBAPP/ATBDeviceControllerPlugin.h
+++ b/src/ATBAPP/ATBDeviceControllerPlugin.h
@@ -111,6 +111,8 @@ private:
 
    DeviceControllerDiag* diag;
 
+   uint32_t cashStartAmountInt;
+
 
    QTextCodec *codec;