Sending a deployment template webhook using the variable bamboo.resultsUrl fails to be sent

020-12-11 10:42:44,394 ERROR [AtlassianEvent::0-BAM::EVENTS:pool-1-thread-1] [WebhookTransport] [Webhook id=11173890, name=Deploy webhook, uuid=12b486a7-351d-41b0-bf62-a0f0bbcd0037] Variable not found: resultsUrl
com.atlassian.bamboo.notification.transports.webhook.VariableNotFoundException: Variable not found resultsUrl
	at com.atlassian.bamboo.notification.transports.webhook.VariableSubstitutorDecorator.substituteString(VariableSubstitutorDecorator.java:24)
	at com.atlassian.bamboo.notification.transports.webhook.WebhookTransport.sendNotification(WebhookTransport.java:68)
	at com.atlassian.bamboo.notification.NotificationDispatcherImpl.dispatchNotifications(NotificationDispatcherImpl.java:45)
	at com.atlassian.bamboo.deployments.notification.DeploymentNotificationEventListener.onDeploymentFinished(DeploymentNotificationEventListener.java:84)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at com.atlassian.event.internal.SingleParameterMethodListenerInvoker.invoke(SingleParameterMethodListenerInvoker.java:42)
	at com.atlassian.event.internal.AsynchronousAbleEventDispatcher.lambda$null$0(AsynchronousAbleEventDispatcher.java:37)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at com.atlassian.bamboo.utils.BambooRunnables$1.run(BambooRunnables.java:48)
	at com.atlassian.bamboo.security.ImpersonationHelper.runWith(ImpersonationHelper.java:26)
	at com.atlassian.bamboo.security.ImpersonationHelper.runWithSystemAuthority(ImpersonationHelper.java:17)
	at com.atlassian.bamboo.security.ImpersonationHelper$1.run(ImpersonationHelper.java:41)
	at java.lang.Thread.run(Thread.java:748)