diff --git a/sumAll/sumAll.js b/sumAll/sumAll.js
index 4030fe8..64d5976 100644
--- a/sumAll/sumAll.js
+++ b/sumAll/sumAll.js
@@ -1,5 +1,30 @@
-const sumAll = function() {
+const sumAll = function(i, n) {{
 
+if (i < 0) {
+  return ('ERROR');
+}
+if (typeof n === 'string') {
+  return ('ERROR');
+}
+if (typeof n === 'object'){
+  return ('ERROR');
+}
+if (i > n){
+  ([i,n] = [n,i]);
+}
+var myNum = 0;
+
+for (i; i <= n; i++) {
+ myNum = myNum + i;
+}
+return (myNum);
+}
+sumAll(1,4);
+sumAll(123,1);
+sumAll(1,4000);
+sumAll(-10,4);
+sumAll(10,"90");
+sumAll(10,[90,1]);
 }
 
 module.exports = sumAll