diff --git a/src/helper/irs-api.ts b/src/helper/irs-api.ts
index 3ac716f..ae208de 100644
--- a/src/helper/irs-api.ts
+++ b/src/helper/irs-api.ts
@@ -43,7 +43,7 @@ export const doTransaction = async (
           customer_no: `${destination}`,
           buyer_sku_code: `${productCode}`,
           ref_id: `${idtrx}`,
-          sign: md5Hash.default(md5HashDigiflazz),
+          sign: md5Hash.default(`${supplier.irs_user}${supplier.irs_pass}${idtrx}`),
           testing: true,
         };
         const res = await axios.post(
@@ -66,7 +66,7 @@ export const doTransaction = async (
           customer_no: `${destination}`,
           buyer_sku_code: `${productCode}`,
           ref_id: `${billTrxId}`,
-          sign: md5Hash.default(md5HashDigiflazz),
+          sign: md5Hash.default(`${supplier.irs_user}${supplier.irs_pass}${idtrx}`),
           testing: true,
         };
         const res = await axios.post(
@@ -89,7 +89,7 @@ export const doTransaction = async (
           customer_no: `${destination}`,
           buyer_sku_code: `${productCode}`,
           ref_id: `${idtrx}`,
-          sign: md5Hash.default(md5HashDigiflazz),
+          sign: md5Hash.default(`${supplier.irs_user}${supplier.irs_pass}${idtrx}`),
           testing: true,
         };
         const res = await axios.post(