diff --git a/modify.sh b/modify.sh
index c8d75b0..4bff07b 100644
--- a/modify.sh
+++ b/modify.sh
@@ -9,6 +9,24 @@ passwd=$2
 base_num=$3
 random_num=$(shuf -i 1-1000 -n 1)
 step=$((  base_num + random_num ))
-echo `date +"%Y/%m/%d %H:%M:%S"` $acct step =\> $step
-curl -s --location --request GET "https://steps.hubp.de/api?account=$acct&password=$passwd&steps=$step"
 
+
+do_it() {
+	echo `date +"%Y/%m/%d %H:%M:%S"` $acct step =\> $step
+	resp=`curl -s --location --request GET "https://steps.hubp.de/api?account=$acct&password=$passwd&steps=$step"`
+	
+	if echo $resp | grep success ;then
+	    echo 步数修改成功,$resp
+	    return 0
+	else
+	    echo 步数修改失败,$resp
+	    return 1
+	fi
+}
+
+for i in `seq 0 4`;do
+	echo try $i times 
+	if do_it;then
+	    exit 0
+	fi
+done