diff --git a/content/otopoiesis.md b/content/otopoiesis.md
index 371ba28d..07ea0519 100644
--- a/content/otopoiesis.md
+++ b/content/otopoiesis.md
@@ -183,14 +183,15 @@ fn track_regions(regions:[{start:float,dur:float,generator:()->float}]){
 ## トラックのランタイム構造
 
 ```rust
+let content = `{ phasor(Param!("freq",20,20000)) } 
 
-fn Track(content:()->float)->`()->float{
-	let thunk = bind_to_runtime(content)//ここでprobeも行うことで、波形とメーター表示をする
-	thunk
+
+fn Track(name:string, content:`float)->`float{
+	`{ $content |> probe_to_track!(name) }
 }
 
-fn master(tracks:[`()->float])->`()->float{
-	`{ || map(tracks,|t| $t() ) |> sum}
+fn master(tracks:[`float])->`float{
+	`{  map(tracks,|t| $t ) |> sum }
 }
 let dsp = Track!($master([t1,t2,t3,...]))