diff --git a/README.md b/README.md
index 40bdaf3..44a75fc 100644
--- a/README.md
+++ b/README.md
@@ -10,6 +10,8 @@ this zero-dependency package will provide a swagger-client for wechat-pay's web-
 
 [![travis-ci.org build-status](https://api.travis-ci.org/kaizhu256/node-swgg-wechat-pay.svg)](https://travis-ci.org/kaizhu256/node-swgg-wechat-pay) [![coverage](https://kaizhu256.github.io/node-swgg-wechat-pay/build/coverage.badge.svg)](https://kaizhu256.github.io/node-swgg-wechat-pay/build/coverage.html/index.html)
 
+[![NPM](https://nodei.co/npm/swgg-wechat-pay.png?downloads=true)](https://www.npmjs.com/package/swgg-wechat-pay)
+
 [![build commit status](https://kaizhu256.github.io/node-swgg-wechat-pay/build/build.badge.svg)](https://travis-ci.org/kaizhu256/node-swgg-wechat-pay)
 
 | git-branch : | [master](https://github.com/kaizhu256/node-swgg-wechat-pay/tree/master) | [beta](https://github.com/kaizhu256/node-swgg-wechat-pay/tree/beta) | [alpha](https://github.com/kaizhu256/node-swgg-wechat-pay/tree/alpha)|
@@ -105,7 +107,7 @@ this script will run a web-demo of swgg-wechat-pay
 instruction
     1. save this script as example.js
     2. run the shell command:
-        $ npm install kaizhu256/node-swgg-wechat-pay#alpha && PORT=8081 node example.js
+        $ npm install swgg-wechat-pay && PORT=8081 node example.js
     3. open a browser to http://127.0.0.1:8081 and play with the web-demo
     4. edit this script to suit your needs
 */
@@ -391,7 +393,7 @@ shBuildCiAfter () {(set -e
 )}
 
 shBuildCiBefore () {(set -e
-    # shNpmTestPublished
+    shNpmTestPublished
     shReadmeTest example.js
 )}
 
diff --git a/assets.swgg.swagger.json b/assets.swgg.swagger.json
index 06072ff..2a667e8 100644
--- a/assets.swgg.swagger.json
+++ b/assets.swgg.swagger.json
@@ -101,7 +101,7 @@
         "notify_url.required": {
             "default": "http://wxpay.weixin.qq.com/pub_v2/pay/notify.v2.php",
             "description": "Notification URL. Specifies callback address for receiving WeChat payment notifications.",
-            "in": "path",
+            "in": "formData",
             "name": "notify_url",
             "required": true,
             "type": "string"
@@ -1281,7 +1281,10 @@
                 "operationId": "_2F_7Bnotify_url_7D_20POST",
                 "parameters": [
                     {
-                        "$ref": "#/parameters/notify_url.required"
+                        "in": "path",
+                        "required": true,
+                        "type": "string",
+                        "x-swgg-$ref": "#/parameters/notify_url.required"
                     },
                     {
                         "$ref": "#/parameters/return_code.required"
diff --git a/assets.utility2.rollup.js b/assets.utility2.rollup.js
index db23332..c0ccd70 100644
--- a/assets.utility2.rollup.js
+++ b/assets.utility2.rollup.js
@@ -16845,9 +16845,11 @@ instruction\n\
 \n\
 \n\
 \n\
+    # shDeployCustom\n\
     shDeployGithub\n\
-    shReadmeTest example.sh\n\
-    shReadmeTest example.js\n\
+    # shDeployHeroku\n\
+    # shNpmTestPublished\n\
+)}\n\
 ';
 
 
@@ -23652,13 +23654,13 @@ local.swaggerErrorTypeDict = {
     // paths.js:79: "Equivalent paths are not allowed."
     semanticPaths2: 'Equivalent paths {{pathList jsonStringify}} are not allowed',
     // paths.js:94: "Path parameters must have unique 'name' + 'in' properties"
-    semanticPaths3: "Path parameters must have unique 'name' + 'in' properties",
+    semanticPaths3: "Path parameter ${parameterDefinition.name jsonStringify} must be unique",
     // paths.js:107: `Path parameter ${parameterDefinition.name} was defined but never used`
     semanticPaths4: 'Path parameter ${parameterDefinition.name} was defined but never used',
     // paths.js:119: "Empty path parameter declarations are not valid"
     semanticPaths5: "Empty path parameter declarations are not valid - {{prefix2 jsonStringify}}",
     // paths.js:131: `Declared path parameter "${parameter}" needs to be defined as a path parameter at either the path or operation level`
-    semanticPaths6: 'Declared path parameter {{name jsonStringify}} needs to be defined as a path parameter {{prefix2}} at either the path or operation level',
+    semanticPaths6: 'Declared path parameter {{name jsonStringify}} needs to be defined as a path parameter {{prefix2 jsonStringify}} at either the path or operation level',
     // paths.js:141: `Path parameter ${parameterDefinition.name} was defined but never used`
     semanticPaths7: 'Path parameter {{prefix0}} was defined but never used',
     // refs.js:37: "Definition was declared but never used in document"
@@ -25484,18 +25486,17 @@ window.swgg.uiEventListenerDict[".onEventUiReload"]({ swggInit: true });\n\
                 // init _methodPath
                 self._methodPath = self._method + ' ' + self._path.replace((/\{.*?\}/g), '{}');
                 self.parameters.forEach(function (schemaP) {
-                    // dereference schemaP.$ref
-                    String(schemaP['x-swgg-$ref'] || schemaP.$ref).replace(
-                        (/#\/parameters\/(.+?$)/),
-                        function (match0, match1) {
-                            match0 = match1;
-                            local.objectSetDefault(
-                                schemaP,
-                                local.jsonCopy(swaggerJson.parameters[match0])
-                            );
-                            schemaP.$ref = undefined;
-                        }
-                    );
+                    // dereference schemaP
+                    String(schemaP['x-swgg-$ref'] || schemaP.$ref).replace((
+                        /#\/parameters\/(.+?$)/
+                    ), function (match0, match1) {
+                        match0 = match1;
+                        local.objectSetDefault(
+                            schemaP,
+                            local.jsonCopy(swaggerJson.parameters[match0])
+                        );
+                        schemaP.$ref = undefined;
+                    });
                     // init _idName.format and _idName.type
                     if (self._schemaName && schemaP.name === self._idName) {
                         schemaP.format = swaggerJson.definitions[self._schemaName]
@@ -27033,6 +27034,17 @@ window.swgg.uiEventListenerDict[".onEventUiReload"]({ swggInit: true });\n\
                     prefix: prefix
                 });
                 pathDict[tmp] = path;
+                // validate semanticPaths3
+                tmp = {};
+                path.replace((/\{.*?\}/g), function (match0) {
+                    test = !tmp[match0];
+                    local.throwSwaggerError(!test && {
+                        errorType: 'semanticPaths3',
+                        name: match0,
+                        prefix: prefix
+                    });
+                    tmp[match0] = true;
+                });
                 // validate semanticPaths5
                 test = path.indexOf('{}') < 0;
                 local.throwSwaggerError(!test && {
@@ -27093,6 +27105,17 @@ window.swgg.uiEventListenerDict[".onEventUiReload"]({ swggInit: true });\n\
                         tmp.path[match0][0] = true;
                     });
                     (operation.parameters || []).forEach(function (schemaP, ii) {
+                        // dereference schemaP
+                        String(schemaP['x-swgg-$ref'] || schemaP.$ref).replace((
+                            /#\/parameters\/(.+?$)/
+                        ), function (match0, match1) {
+                            match0 = match1;
+                            schemaP = local.objectSetDefault(
+                                local.jsonCopy(schemaP),
+                                local.jsonCopy(swaggerJson.parameters[match0])
+                            );
+                            schemaP.$ref = undefined;
+                        });
                         // validate semanticOperations2
                         test = !(tmp.in.body && schemaP.in === 'body');
                         local.throwSwaggerError(!test && {