fixes #544 and final changes

Signed-off-by: tech4GT <varun.gupta1798@gmail.com>

src/InsertStep.js

@@ -34,15 +34,18 @@ function InsertStep(ref, image, index, name, o) {
     };
     var UI = ref.events;
 
-    // Tell UI that a step has been set up.
-    o = o || {};
+    // define the expandSteps function for sequencer
     ref.modules[name].expandSteps = function expandSteps(stepsArray) {
       for (var step of stepsArray) {
         ref.addSteps(step['name'], step['options']);
       }
     }
+
+    // Tell UI that a step has been set up.
+    o = o || {};
+
     if (!ref.modules[name][1].length) {
-      UI.onSetup(o.step);
+      UI.onSetup(o.step, { index: index });
       ref.images[image].steps.splice(index, 0, ref.modules[name][0](o, UI));
     } else {
       ref.modules[name][0](o, UI);