diff --git a/worker.go b/worker.go
index d2eec2e..c6feed1 100644
--- a/worker.go
+++ b/worker.go
@@ -81,9 +81,9 @@ func yunhorn_ys_l_v1(data_buf []byte) {
 	device.VERSION = demoDevice.VERSION
 	device.ONLINE = demoDevice.ONLINE
 
-	demoDevice.DATA["data"+strconv.Itoa(1)] = rand.Intn(2)
-	demoDevice.DATA["data"+strconv.Itoa(2)] = rand.Intn(2)
-	demoDevice.DATA["data"+strconv.Itoa(3)] = rand.Intn(2)
+	demoDevice.DATA["data"+strconv.Itoa(1)] = 0
+	demoDevice.DATA["data"+strconv.Itoa(2)] = 0
+	demoDevice.DATA["data"+strconv.Itoa(3)] = 0
 
 	//485
 	if data_type[0] == 2 {