diff --git a/src/drawApp/graphics/PlatformInteraction.ts b/src/drawApp/graphics/PlatformInteraction.ts
index f11af66..a8d48bd 100644
--- a/src/drawApp/graphics/PlatformInteraction.ts
+++ b/src/drawApp/graphics/PlatformInteraction.ts
@@ -208,10 +208,10 @@ export class PlatformState extends GraphicStateBase implements IPlatformState {
     this.states.rtuId = value;
   }
   get bizWaitTimeSec(): number {
-    return this.states.bizWaitStartTimeSec;
+    return this.states.bizWaitTimeSec;
   }
   set bizWaitTimeSec(value: number) {
-    this.states.bizWaitStartTimeSec = value;
+    this.states.bizWaitTimeSec = value;
   }
   get states(): state.Platform {
     return this.getState<state.Platform>();