diff --git a/js/coin.js b/js/coin.js
index 1ba2682..c979a4a 100644
--- a/js/coin.js
+++ b/js/coin.js
@@ -746,9 +746,41 @@
     r.parse();
     return r;
   }
+  
+  coinjs.cpmareUnspents = function( unspent1, unspent2){
+	  return ( unspent1.amount - unspent2.amount);
+  }
+ 
+  coinjs.partition = function(arr, start, end, compare){
+    const pivot = arr[end];
+    let pIndex = start; 
+    for (let i = start; i < end; i++) {
+        if (compare(arr[i] , pivot) < 0 ) {
+        // Swap
+        [arr[i], arr[pIndex]] = [arr[pIndex], arr[i]];
+        pIndex++;
+        }
+    }
+    
+    [arr[pIndex], arr[end]] = [arr[end], arr[pIndex]] 
+    return pIndex;
+};
+
+coinjs.qSort = function(arr, start, end, compare) {
+    // terminating condition
+    if (start >= end) {
+        return;
+    }
+    let index = partition(arr, start, end, compare);
+    
+    // Recursively apply the same logic to the left and right subarrays
+    qSort(arr, start, index - 1, compare);
+    qSort(arr, index + 1, end, compare);
+}
 
-  /* start of transaction functions */
 
+  /* start of transaction functions */
+   
   /* create a new transaction object */
   coinjs.transaction = function() {
 
@@ -841,7 +873,7 @@
     }
 
     /* add unspent to transaction */
-    r.addUnspent = function(address, callback, script, sequence){
+    r.addUnspent = function(address, amount, callback, script, sequence){
       var self = this;
       this.listUnspent(address, function(data){
 
@@ -852,9 +884,9 @@
         var x = {};
 
         var unspent = JSON.parse(data);
-	console.log("Unspent is"+unspent);
-
-        for(i=0;i<=unspent.length-1;i++){
+	console.log("Unspent is:"+unspent);
+	//qSort(unspent, 0, unspent.length, compareUnspents);
+        for(i=0;i<=unspent.length-1 && value < amount;i++){
           var txhash = unspent[i].txid,
             n = unspent[i].vout,
             scr = unspent[i].scriptPubKey,
@@ -874,10 +906,10 @@
     }
 
     /* add unspent and sign */
-    r.addUnspentAndSign = function(wif, callback){
+    r.addUnspentAndSign = function(wif, amount, callback){
       var self = this;
       var address = coinjs.wif2address(wif);
-      self.addUnspent(address['address'], function(data){
+      self.addUnspent(address['address'], amount, function(data){
         self.sign(wif);
         return callback(data);
       });
diff --git a/js/coinbin.js b/js/coinbin.js
index 99d3f06..286f765 100644
--- a/js/coinbin.js
+++ b/js/coinbin.js
@@ -118,7 +118,7 @@ console.log("Finished wallet spend");
 
     var sequence = false;
 
-    tx.addUnspent($("#walletAddress").html(), function(data){
+    tx.addUnspent($("#walletAddress").html(), total, function(data){
 console.log("Going into tx.addUnspent"+data.value);
 
       var dvalue = (data.value).toFixed(8) * 1;