diff --git a/website/fake_wire_transfer.php b/website/fake_wire_transfer.php
index a788a372e..97e36e9b7 100644
--- a/website/fake_wire_transfer.php
+++ b/website/fake_wire_transfer.php
@@ -43,13 +43,26 @@ $reserve_pk = $_POST['reserve_pk'];
 $kudos_amount = $_POST['kudos_amount'];
 $mint = $_SERVER['SERVER_NAME'];
 
+// check if the webform has given a well formed amount
+$ret = preg_match ('/[0-9]+(\.[0-9][0-9]?)? [A-Z]+/', $kudos_amount, $matches);
+if ($matches[0] != $_POST['kudos_amount'])
+{
+  http_response_code(400); // BAD REQUEST
+  echo "Malformed amount given";
+  return;
+}
+$amount_chunks = preg_split('/[ \.]/', $_POST['kudos_amount']);
+$amount_fraction = 0;
+if (count($amount_chunks) > 2)
+  $amount_fraction = (double) ("0." . $amount_chunks[1]);
+$amount_fraction = $amount_fraction * 1000000;
 // pack the JSON
 $json = json_encode (array ('reserve_pub' => $reserve_pk, 
                             'execution_date' => "/Date(" . time() . ")/",
                             'wire' => array ('type' => 'test'),
-                            'amount' => array ('value' => intval($kudos_amount),
-	                                       'fraction' => 0,
-					       'currency' => 'KUDOS'))); // TODO 'KUDOS' example needs 'KUDOS' denom keys ..
+                            'amount' => array ('value' => intval($amount_chunks[0]),
+	                                       'fraction' => $amount_fraction,
+					       'currency' => $amount_chunks[count($amount_chunks) - 1])));
 
 // craft the HTTP request
 $req = new http\Client\Request ("POST",
diff --git a/website/index.html b/website/index.html
index 4dff2a7ad..7bb9bcc1e 100644
--- a/website/index.html
+++ b/website/index.html
@@ -48,19 +48,21 @@
     <input id="wire-funds-button" type="button" value="Wire funds" disabled=true
       onclick='wire_funds();'></input>
     </div>
-      <form id="reserve-form" name="tform" action="/fake_wire_transfer.php" method="POST">
+      <form id="reserve-form" name="tform" action="/fake_wire_transfer.php" method="POST" onsubmit="signal_reserve()">
         <div class="participation" id="fake-wire">
           <br>
           Paste your reserve public key here (right-click, "paste"):
-          <input type="text" name="reserve_pk"></input>
+          <input type="text" id="reserve-pk-input" name="reserve_pk"></input>
           <br>
           Amount to credit to your reserve: 
-          <select id="amount" name="kudos_amount">
-            <option value="1">1 KUDOS</option>
-            <option value="2">2 KUDOS</option>
-            <option value="5">5 KUDOS</option>
-            <option value="10">10 KUDOS</option>
-            <option value="1000">1000 KUDOS</option>
+          <select id="reserve-amn-id" name="kudos_amount">
+            <option value="1 KUDOS">1 KUDOS</option>
+            <option value="2 KUDOS">2 KUDOS</option>
+            <option value="3.01 KUDOS">3.01 KUDOS</option>
+            <option value="5 KUDOS">5 KUDOS</option>
+            <option value="10 KUDOS">10 KUDOS</option>
+            <option value="10.50 KUDOS">10.50 KUDOS</option>
+            <option value="1000 KUDOS">1000 KUDOS</option>
           </select>
           <br>
           <input type="submit" value="Submit"></input>
@@ -74,6 +76,11 @@
      - it gets installed
      - it gets a 'taler-wire-mfirst' event */
 
+  function signal_reserve(){
+    var reserve_submitted = new Event("reserve-submitted");
+    document.body.dispatchEvent(reserve_submitted); 
+  };
+
   document.body.addEventListener("taler-wallet-present",
                                  has_taler_wallet_cb,
 				 false);
@@ -89,9 +96,10 @@
 
 
   function wire_funds(){
-    let wallet_param = {
+    var wallet_param = {
     'currencies' : new Array("KUDOS"),
-    'input_name' : 'reserve-pk-id',
+    'input_amount' : 'reserve-amn-id',
+    'input_pub' : 'reserve-pk-input',
     'base_url' : window.location.host
     };
     var trigger = new CustomEvent("taler-create-reserve", {detail: wallet_param});