diff --git a/README.md b/README.md
index d6f21a9..25ad803 100644
--- a/README.md
+++ b/README.md
@@ -86,17 +86,18 @@ struct MyGraph: View {
     @State var isRunning = true // start moving once appeared.
     
     var body: some View {
-        ForceDirectedGraph(isRunning: $isRunning) {
+        ForceDirectedGraph($isRunning) {
             
             // Declare nodes and links like you would do in Swift Charts.
-            NodeMark(id: 0, fill: .green)
-            NodeMark(id: 1, fill: .blue)
-            NodeMark(id: 2, fill: .yellow)
-            for i in 0..<2 {
+            NodeMark(id: 0).foregroundStyle(.green)
+            NodeMark(id: 1).foregroundStyle(.blue)
+            NodeMark(id: 2).foregroundStyle(.yellow)
+
+            ForEach(Array(0..<2), id:\.self) { i in
                 LinkMark(from: i, to: i+1)
             }
             
-        } forceField: {
+        } force: {
             LinkForce()
             CenterForce()
             ManyBodyForce()