diff --git a/components/Timetable.tsx b/components/Timetable.tsx
index 052ac14..7e29554 100644
--- a/components/Timetable.tsx
+++ b/components/Timetable.tsx
@@ -176,9 +176,10 @@ const Timetable = ({
     if (openRecordMode) {
       for (const index in json) {
         const input = indexToElement[index];
-        const td= indexToCell[index];
+        const td = indexToCell[index];
         if (json[index] !== user) {
-          td.innerHTML = json[index]
+          td.innerHTML = json[index];
+          td.removeAttribute("bgcolor");
         } else {
           input.checked = true;
           input.disabled = true;
@@ -240,7 +241,9 @@ const Timetable = ({
           for (const row of marks) {
             for (const input of row) {
               if (input === null) continue;
-              if (input.value !== "") {
+              if (input.checked) {
+                data.selections[input.name] = 1;
+              } else if (parseFloat(input.value)) {
                 data.selections[input.name] = parseFloat(input.value);
               }
             }