updated to $pendingTasks

Author: LauraBrenner

articles/batch/batch-automatic-scaling.md

@@ -671,10 +671,10 @@ In this example, the pool size is adjusted based on the number of tasks in the q
 
 ```csharp
 // Get pending tasks for the past 15 minutes.
-$samples = $ActiveTasks.GetSamplePercent(TimeInterval_Minute * 15);
+$samples = $PendingTasks.GetSamplePercent(TimeInterval_Minute * 15);
 // If we have fewer than 70 percent data points, we use the last sample point,
 // otherwise we use the maximum of last sample point and the history average.
-$tasks = $samples < 70 ? max(0,$ActiveTasks.GetSample(1)) : max( $ActiveTasks.GetSample(1), avg($ActiveTasks.GetSample(TimeInterval_Minute * 15)));
+$tasks = $samples < 70 ? max(0,$PendingTasks.GetSample(1)) : max( $PendingTasks.GetSample(1), avg($PendingTasks.GetSample(TimeInterval_Minute * 15)));
 // If number of pending tasks is not 0, set targetVM to pending tasks, otherwise
 // half of current dedicated.
 $targetVMs = $tasks > 0? $tasks:max(0, $TargetDedicatedNodes/2);