diff --git a/frontend/src/routes/priority/+page.svelte b/frontend/src/routes/priority/+page.svelte
index e9d8bf4..de103b4 100644
--- a/frontend/src/routes/priority/+page.svelte
+++ b/frontend/src/routes/priority/+page.svelte
@@ -27,7 +27,7 @@
 	$: min = 0;
 	$: sec = 0;
 	$: end = false;
-	$: start = false;
+	// $: start = false;
 
 	function resetHeat() {
 		heat = {
@@ -85,13 +85,13 @@
 				min = min_sec[0];
 				sec = min_sec[1];
 				// console.log(`min & sec = ${min} & ${sec}`);
-				if (!start) {
-					start = true;
+				if (!$priority.start) {
+					$priority.start = true;
 				}
 			} else if (Msg.mode === 'stop') {
 				console.log(`stop duration: ${Msg.duration}`);
 				end = true;
-				start = false;
+				$priority.start = false;
 			}
 		};
 		return () => {
@@ -125,7 +125,7 @@
 			}
 		});
 		console.log(`retval: ${JSON.stringify(res)}`);
-		start = true;
+		$priority.start = true;
 		end = false;
 	}
 
@@ -228,7 +228,7 @@
 	{:else}
 		<div class="timer" style="color: red">{pad2(min)}:{pad2(sec)}</div>
 	{/if}
-	{#if start}
+	{#if $priority.start}
 		<Button handleClick={() => startHeat()} label="STOP" />
 	{:else}
 		<Button handleClick={() => startHeat()} label="START" />