diff --git a/AlgebraicDataflowArchitectureModel/src/application/editor/stages/ControlFlowDelegationCellEditor.java b/AlgebraicDataflowArchitectureModel/src/application/editor/stages/ControlFlowDelegationCellEditor.java
index a2a7d64..bf219f6 100644
--- a/AlgebraicDataflowArchitectureModel/src/application/editor/stages/ControlFlowDelegationCellEditor.java
+++ b/AlgebraicDataflowArchitectureModel/src/application/editor/stages/ControlFlowDelegationCellEditor.java
@@ -11,6 +11,7 @@
 import com.mxgraph.model.mxCell;
 import com.mxgraph.swing.mxGraphComponent;
 import com.mxgraph.swing.mxGraphComponent.mxGraphControl;
+import com.mxgraph.view.mxCellState;
 
 import application.editor.FlowCellEditor;
 import models.controlFlowModel.CallEdgeAttribute;
@@ -54,19 +55,46 @@
 				
 		switch(curState) {
 			case SELECTING_AN_EDGE:
-				
-				if( graphComponent.getGraph().getModel().isEdge(cellObj) ) {
-					System.out.println("Selecting");
+				// Branching based on the edge click event.
+				// | double clicked > Showing delegatable nodes.
+				// | right    clicked > Inserting a stateless node. 
+				//								(added listener -> InsertObjectNodeAction)
+				if( graphComponent.getGraph().getModel().isEdge(cellObj)) {
+					showDelegatableNodesBySelectedEdge(cellObj);
+					curState = ControlFlowDelegationStageStatus.SHOWING_DELEGATABLE_NODES;
+					
+					mxCellState state = graphComponent.getGraph().getView().getState(cellObj);
+
+					// If the label of the edge is clicked,
+					// then inputing a call order you want.
+					if(state == null || state.getLabel() == null) return;
+					if(state.getLabel().equals("")) return;
+
+					String input = "";
+					int inputOrder = 0;
 
 					CallEdgeAttribute callEdgeAttr = (CallEdgeAttribute)graphComponent.getGraph().getModel().getValue(cellObj);	
 					if(callEdgeAttr == null) return;
 					
-					System.out.println("Edge: " + callEdgeAttr.getSelectedOption().name());		
+					input = JOptionPane.showInputDialog("Call order");
+					if( input == null) return;
+					if( !isNumeric(input) ) {
+						JOptionPane.showMessageDialog(graphComponent, "Input value must type of number.");
+						return;
+					}
 					
-					((ControlFlowDelegationStage)stage).showDelegatableNodes(callEdgeAttr);			
+					inputOrder = Integer.parseInt(input);
 					
-					// Advance to the next stage;
-					curState = ControlFlowDelegationStageStatus.SHOWING_DELEGATABLE_NODES;
+					final int endOfOrderOfSrc = callEdgeAttr.getSourceObjectNode().getOutdegree();
+	
+					if(inputOrder <= 0	|| endOfOrderOfSrc < inputOrder) {
+						JOptionPane.showMessageDialog(graphComponent, "Input order must be between 0 and " + endOfOrderOfSrc + ".");
+						return;
+					}
+					
+					int curOrder = callEdgeAttr.getSourceObjectNode().getOutEdgeCallOrder(callEdgeAttr.getCallEdge());
+					callEdgeAttr.getSourceObjectNode().sortOutEdgesByCallOrder(curOrder,  inputOrder);					
+					graphComponent.refresh();
 				}
 				break;
 
@@ -91,7 +119,29 @@
 	public void stopEditing(boolean cancel) {
 
 	}
-		
+
+	
+	/*************************************************************
+	 * [ *private ]
+	/*************************************************************
+	 * 
+	 */
+	private void showDelegatableNodesBySelectedEdge(Object cellObj) {
+			CallEdgeAttribute callEdgeAttr = (CallEdgeAttribute)graphComponent.getGraph().getModel().getValue(cellObj);	
+			if(callEdgeAttr == null) return;
+			
+			((ControlFlowDelegationStage)stage)
+				.showDelegatableNodes(graphComponent.getGraph(), callEdgeAttr);
+	}
+
+	/*************************************************************
+	 * 
+	 */
+	private boolean isNumeric(final String str) {
+		if(str == null) return false;
+		return str.matches("[0-9.]+");
+	}
+	
 	/*************************************************************
 	 * Inserting an intermediation object type of <Object-Node>.
 	 */