diff --git a/src/pages/Proof/Create_FromApp/ProofForm.js b/src/pages/Proof/Create_FromApp/ProofForm.js
index 439692f..0e5553b 100644
--- a/src/pages/Proof/Create_FromApp/ProofForm.js
+++ b/src/pages/Proof/Create_FromApp/ProofForm.js
@@ -54,7 +54,7 @@ const FormPanel = ({ formData }) => {
             }
             setProofPaymentDeadlineMin(formData.proofPaymentDeadline);
             setReviseDeadlineMin(formData.reviseDeadline);
-            setExpectedCode(formData.groupNo.substr(1,formData.groupNo.length)+"-"+formData.issueNo+"-"+formData.issueYear.substr(2, formData.issueYear.length));
+            setExpectedCode(formData.groupNo.substr(1,formData.groupNo.length)+"-"+formData.issueNo+"-"+formData.issueYear.toString().substr(2, formData.issueYear.toString().length));
         }
     }, [formData]);