diff --git a/generator/src/main/resources/line-bot-sdk-nodejs-generator/apiBody/normal.pebble b/generator/src/main/resources/line-bot-sdk-nodejs-generator/apiBody/normal.pebble
index 8af6f2cfa..344278345 100644
--- a/generator/src/main/resources/line-bot-sdk-nodejs-generator/apiBody/normal.pebble
+++ b/generator/src/main/resources/line-bot-sdk-nodejs-generator/apiBody/normal.pebble
@@ -21,7 +21,11 @@
         });
     {% elseif op.hasQueryParams %}const queryParams = {
         {% for param in op.queryParams -%}
+        {% if param.isArray -%}
+            "{{param.paramName}}": [...{{param.paramName}}].join(","),
+        {% else -%}
             "{{param.paramName}}": {{param.paramName}},
+        {% endif -%}
         {% endfor %}
         };
         Object.keys(queryParams).forEach((key: keyof typeof queryParams) => {
diff --git a/generator/src/main/resources/line-bot-sdk-nodejs-generator/api_test.pebble b/generator/src/main/resources/line-bot-sdk-nodejs-generator/api_test.pebble
index 350343b4d..1337d8f84 100644
--- a/generator/src/main/resources/line-bot-sdk-nodejs-generator/api_test.pebble
+++ b/generator/src/main/resources/line-bot-sdk-nodejs-generator/api_test.pebble
@@ -70,6 +70,32 @@ function parseForm(
             new Blob([]), // paramName={{ param.paramName }}
         {% elseif param.isModel -%}
             {} as unknown as {{ param.dataType }}, // paramName={{ param.paramName }}
+        {% elseif param.isArray -%}
+            new Set(["DUMMY1", "DUMMY2"]) as unknown as {{ param.dataType }},
+        {% elseif param.isEnum -%}
+            "DUMMY" as unknown as {{ param.dataType }}, // paramName={{ param.paramName }}(enum)
+        {% elseif param.isExplode -%}
+            "DUMMY" as unknown as {{ param.dataType}}, // paramName={{param.paramName}}(enum)
+        {% elseif param.isString -%}
+            "DUMMY", // {{param.paramName}}(string)
+        {% elseif param.isNumber or param.isInteger or param.isLong -%}
+            0, // paramName={{param.paramName}}(number or int or long)
+        {% elseif param.isBoolean -%}
+            true, // paramName={{param.paramName}}
+        {% else -%}
+            // UNKNOWN TYPE: paramName={{param.paramName}} {{ param.dataType }}
+    {% endif -%}
+{% endmacro %}
+
+{% macro paramDummyValueString(param) %}
+{# @pebvariable name="param" type="org.openapitools.codegen.CodegenParameter" #}
+        // {{ param.paramName }}: {{ param.dataType }}
+    {% if param.isFile -%}
+            new Blob([]), // paramName={{ param.paramName }}
+        {% elseif param.isModel -%}
+            {} as unknown as {{ param.dataType }}, // paramName={{ param.paramName }}
+        {% elseif param.isArray -%}
+            "DUMMY1,DUMMY2" as unknown as {{ param.dataType }},
         {% elseif param.isEnum -%}
             "DUMMY" as unknown as {{ param.dataType }}, // paramName={{ param.paramName }}(enum)
         {% elseif param.isExplode -%}
@@ -111,7 +137,7 @@ function parseForm(
       // Query parameters
       const queryParams = new URLSearchParams(reqUrl.search);
           {% for param in op.queryParams -%}
-      equal(queryParams.get("{{param.paramName}}"), String({{ paramDummyValue(param) }}));
+      equal(queryParams.get("{{param.paramName}}"), String({{ paramDummyValueString(param) }}));
           {% endfor %}
 {% endif %}
     {% if authMethods != null -%}
@@ -148,7 +174,7 @@ function parseForm(
           // Form parameters
           const formData = parseForm(arrayBuffer);
           {% for param in op.formParams -%}
-          equal(formData["{{param.paramName}}"], String({{ paramDummyValue(param) }}));
+          equal(formData["{{param.paramName}}"], String({{ paramDummyValueString(param) }}));
           {% endfor %}
 
           res.writeHead(200, { "Content-Type": "application/json" });
diff --git a/lib/messaging-api/api/messagingApiClient.ts b/lib/messaging-api/api/messagingApiClient.ts
index 09f090144..d3cbf04c9 100644
--- a/lib/messaging-api/api/messagingApiClient.ts
+++ b/lib/messaging-api/api/messagingApiClient.ts
@@ -1583,7 +1583,7 @@ export class MessagingApiClient {
     limit?: number,
   ): Promise<Types.ApiResponseType<MessagingApiPagerCouponListResponse>> {
     const queryParams = {
-      status: status,
+      status: [...status].join(","),
       start: start,
       limit: limit,
     };
diff --git a/lib/messaging-api/tests/api/MessagingApiClientTest.spec.ts b/lib/messaging-api/tests/api/MessagingApiClientTest.spec.ts
index 124a02822..f282b792c 100644
--- a/lib/messaging-api/tests/api/MessagingApiClientTest.spec.ts
+++ b/lib/messaging-api/tests/api/MessagingApiClientTest.spec.ts
@@ -4242,7 +4242,7 @@ describe("MessagingApiClient", () => {
         queryParams.get("status"),
         String(
           // status: Set<'DRAFT' | 'RUNNING' | 'CLOSED'>
-          "DUMMY" as unknown as Set<"DRAFT" | "RUNNING" | "CLOSED">, // paramName=status(enum)
+          "DUMMY1,DUMMY2" as unknown as Set<"DRAFT" | "RUNNING" | "CLOSED">,
         ),
       );
       equal(
@@ -4283,7 +4283,9 @@ describe("MessagingApiClient", () => {
 
     const res = await client.listCouponWithHttpInfo(
       // status: Set<'DRAFT' | 'RUNNING' | 'CLOSED'>
-      "DUMMY" as unknown as Set<"DRAFT" | "RUNNING" | "CLOSED">, // paramName=status(enum)
+      new Set(["DUMMY1", "DUMMY2"]) as unknown as Set<
+        "DRAFT" | "RUNNING" | "CLOSED"
+      >,
 
       // start: string
       "DUMMY" as unknown as string, // paramName=start(enum)
@@ -4317,7 +4319,7 @@ describe("MessagingApiClient", () => {
         queryParams.get("status"),
         String(
           // status: Set<'DRAFT' | 'RUNNING' | 'CLOSED'>
-          "DUMMY" as unknown as Set<"DRAFT" | "RUNNING" | "CLOSED">, // paramName=status(enum)
+          "DUMMY1,DUMMY2" as unknown as Set<"DRAFT" | "RUNNING" | "CLOSED">,
         ),
       );
       equal(
@@ -4358,7 +4360,9 @@ describe("MessagingApiClient", () => {
 
     const res = await client.listCoupon(
       // status: Set<'DRAFT' | 'RUNNING' | 'CLOSED'>
-      "DUMMY" as unknown as Set<"DRAFT" | "RUNNING" | "CLOSED">, // paramName=status(enum)
+      new Set(["DUMMY1", "DUMMY2"]) as unknown as Set<
+        "DRAFT" | "RUNNING" | "CLOSED"
+      >,
 
       // start: string
       "DUMMY" as unknown as string, // paramName=start(enum)
diff --git a/test/libs-messagingApi.spec.ts b/test/libs-messagingApi.spec.ts
index 088c4ee68..868d9230f 100644
--- a/test/libs-messagingApi.spec.ts
+++ b/test/libs-messagingApi.spec.ts
@@ -180,6 +180,55 @@ describe("messagingApi", () => {
     });
   });
 
+  it("get coupon list", async () => {
+    let requestCount = 0;
+    server.use(
+      http.get(
+        "https://api.line.me/v2/bot/coupon",
+        async ({ request, params, cookies }) => {
+          requestCount++;
+
+          equal(
+            request.headers.get("authorization"),
+            "Bearer test_channel_access_token",
+          );
+          equal(request.headers.get("User-Agent"), "@line/bot-sdk/1.0.0-test");
+
+          const url = new URL(request.url);
+          const searchParams = url.searchParams;
+          equal(searchParams.get("status"), "DRAFT,RUNNING,CLOSED");
+          equal(searchParams.get("start"), "xBQU2IB");
+          equal(searchParams.get("limit"), "100");
+
+          return HttpResponse.json({
+            items: [
+              {
+                couponId: "coupon_id_1",
+                title: "coupon 1",
+              },
+            ],
+            next: "yANU9IA..",
+          });
+        },
+      ),
+    );
+
+    const res = await client.listCoupon(
+      new Set(["DRAFT", "RUNNING", "CLOSED"]),
+      "xBQU2IB",
+      100,
+    );
+    deepEqual(res, {
+      items: [
+        {
+          couponId: "coupon_id_1",
+          title: "coupon 1",
+        },
+      ],
+      next: "yANU9IA..",
+    });
+  });
+
   it("config is not overrided", async () => {
     const config = {
       channelAccessToken: "token-token",