diff --git a/src/modules/06_evaluate/components/viewstep/viewStep1.vue b/src/modules/06_evaluate/components/viewstep/viewStep1.vue
index a6e7c29..a3057f8 100644
--- a/src/modules/06_evaluate/components/viewstep/viewStep1.vue
+++ b/src/modules/06_evaluate/components/viewstep/viewStep1.vue
@@ -249,7 +249,7 @@ function onOpenDialogPerformance(
   stetusEdit: boolean = false,
   index: number | null = null
 ) {
-  if (stetusEdit && index) {
+  if (stetusEdit && index !== null) {
     isIndex.value = index;
     const data = formDetail.assessments[index];
     formPerformance.year = data.year ? Number(data.year) - 543 : null;
@@ -276,7 +276,7 @@ function onSubmitPerformance() {
     isAdd: true,
   };
 
-  if (isEdit.value && isIndex.value) {
+  if (isEdit.value && isIndex.value !== null && isIndex.value !== undefined) {
     formDetail.assessments[isIndex.value] = body;
   } else {
     formDetail.assessments.push(body);