diff --git a/scripts/lib/upt.lua b/scripts/lib/upt.lua
index ea660fe..57a14d0 100644
--- a/scripts/lib/upt.lua
+++ b/scripts/lib/upt.lua
@@ -14,7 +14,7 @@ function _M.upt(uri)
     local sign = ngx.md5(secret .. '&' .. etime .. '&' .. uri)
     ngx.log(ngx.ERR, 'sign...' .. sign .. ' etime..' .. etime)
     local upt = string.sub(sign, 13, 13 + 7) .. etime
-    ngx.say(upt)
+    return (upt)
 end
 
 return _M
\ No newline at end of file
diff --git a/scripts/upt.lua b/scripts/upt.lua
index 174a775..a867ed3 100644
--- a/scripts/upt.lua
+++ b/scripts/upt.lua
@@ -1,4 +1,4 @@
 package.path = package.path .. ';<SCRIPT_PATH>/?.lua';
-local upt = require("lib.upt")
+local Upt = require("lib.upt")
 local uri = ngx.unescape_uri(ngx.var.arg_uri)
-upt.upt(uri)
\ No newline at end of file
+Upt.upt(uri)
\ No newline at end of file