diff --git a/AlgebraicDataflowArchitectureModel/src/application/editor/stages/DependencyCellEditor.java b/AlgebraicDataflowArchitectureModel/src/application/editor/stages/DependencyCellEditor.java
index 889b232..6de3df5 100644
--- a/AlgebraicDataflowArchitectureModel/src/application/editor/stages/DependencyCellEditor.java
+++ b/AlgebraicDataflowArchitectureModel/src/application/editor/stages/DependencyCellEditor.java
@@ -49,12 +49,12 @@
     }
 
     /**
-     * Determines whether the given cell is an interface node (rhombus shape)
+     * Determines whether the given cell is an interface node (Interface shape)
      */
     private boolean isInterfaceNode(mxCell cell) {
         if (cell == null || !cell.isVertex()) return false;
         String style = cell.getStyle();
-        return style != null && style.contains("shape=rhombus");
+        return style != null && style.contains("shape=interface");
     }
 
     /**
@@ -219,7 +219,7 @@
             // Remove the original edge
             graphComponent.getGraph().getModel().remove(edgeCell);
 
-            // Insert the interface node (rhombus) into the DEPENDENCY_LAYER
+            // Insert the interface node (Interface) into the DEPENDENCY_LAYER
             mxCell interfaceNode = (mxCell) graphComponent.getGraph().insertVertex(
                     layerCell,
                     null,
@@ -228,7 +228,7 @@
                     midY - ddmStage.DEPENDENCY_NODE_SIZE / 2,
                     ddmStage.DEPENDENCY_NODE_SIZE,
                     ddmStage.DEPENDENCY_NODE_SIZE,
-                    "shape=rhombus;fillColor=#BBFFBB;perimeter=rhombusPerimeter;resizable=0;"
+                    "shape=interface;strokeColor=green;fillColor=#BBFFBB;perimeter=rectanglePerimeter;resizable=0;"
             );
 
             // Get the original edge's style and value
diff --git a/AlgebraicDataflowArchitectureModel/src/application/editor/stages/DependencyModelingStage.java b/AlgebraicDataflowArchitectureModel/src/application/editor/stages/DependencyModelingStage.java
index b55a78f..0887d60 100644
--- a/AlgebraicDataflowArchitectureModel/src/application/editor/stages/DependencyModelingStage.java
+++ b/AlgebraicDataflowArchitectureModel/src/application/editor/stages/DependencyModelingStage.java
@@ -4,6 +4,7 @@
 import application.editor.Editor;
 import application.editor.FlowCellEditor;
 import application.editor.Stage;
+import com.mxgraph.canvas.mxGraphics2DCanvas;
 import com.mxgraph.model.mxCell;
 import com.mxgraph.model.mxGeometry;
 import com.mxgraph.model.mxGraphModel;
@@ -21,6 +22,7 @@
 import models.dataConstraintModel.ResourcePath;
 import models.dataFlowModel.*;
 import models.dependencyModel.DependencyGraph;
+import models.dependencyModel.mxInterfaceShape;
 
 import java.awt.event.MouseAdapter;
 import java.awt.event.MouseEvent;
@@ -28,6 +30,11 @@
 import java.util.*;
 
 public class DependencyModelingStage extends Stage {
+    
+    static {
+        mxGraphics2DCanvas.putShape("interface", new mxInterfaceShape());
+    }
+    
     public final int DEPENDENCY_NODE_SIZE = 50;
 
     private DependencyModelingStageStatus curState = null;
@@ -336,7 +343,7 @@
                 if (srcCell != null && dstCell != null) {
                     String style = "strokeWidth=3;strokeColor=green;movable=false";
                     if (callEdge.getSelectedOption() == models.dataFlowModel.PushPullValue.PULL) {
-                        style = "strokeWidth=3;strokeColor=green;dashed=true;movable=false";
+                        style = "strokeWidth=3;strokeColor=green;movable=false";
                     }
                     graph.insertEdge(layerCell, null, null, srcCell, dstCell, style);
                 }
diff --git a/AlgebraicDataflowArchitectureModel/src/models/dependencyModel/mxInterfaceShape.java b/AlgebraicDataflowArchitectureModel/src/models/dependencyModel/mxInterfaceShape.java
new file mode 100644
index 0000000..2ceeda3
--- /dev/null
+++ b/AlgebraicDataflowArchitectureModel/src/models/dependencyModel/mxInterfaceShape.java
@@ -0,0 +1,36 @@
+package models.dependencyModel;
+
+import com.mxgraph.canvas.mxGraphics2DCanvas;
+import com.mxgraph.shape.mxBasicShape;
+import com.mxgraph.view.mxCellState;
+
+import java.awt.*;
+
+public class mxInterfaceShape extends mxBasicShape {
+
+    @Override
+    public void paintShape(mxGraphics2DCanvas canvas, mxCellState state) {
+        Rectangle rect = state.getRectangle();
+        int x = rect.x;
+        int y = rect.y;
+        int w = rect.width;
+        int h = rect.height;
+
+        int adjustedH = (int)(h * 2.0 / 3.0);
+        int yOffset = (h - adjustedH) / 2;
+
+        int offset = (int)(w * 0.2);
+
+        int[] xPoints = {x + offset, x + w, x + w - offset, x};
+        int[] yPoints = {y + yOffset, y + yOffset, y + yOffset + adjustedH, y + yOffset + adjustedH};
+
+        Polygon parallelogram = new Polygon(xPoints, yPoints, 4);
+
+        if (canvas.getGraphics() != null) {
+            canvas.getGraphics().setColor(getFillColor(canvas, state));
+            canvas.getGraphics().fillPolygon(parallelogram);
+            canvas.getGraphics().setColor(getStrokeColor(canvas, state));
+            canvas.getGraphics().drawPolygon(parallelogram);
+        }
+    }
+}