diff --git a/playground/nutech/receipt/timertfc-schema.json b/playground/nutech/receipt/timertfc-schema.json
index 7bc889b0..ca479594 100644
--- a/playground/nutech/receipt/timertfc-schema.json
+++ b/playground/nutech/receipt/timertfc-schema.json
@@ -9,7 +9,7 @@
     "timer_value_tfc": {
       "type": "integer",
       "title": "Timer Value",
-      "default":""
+      "default":"P"
     },
     "time_format":{
       "type": "string",