Include Application custom property in Component monitor alert

I would like to include specific escalation details in a custom property of my application monitors that will be included on the alert emails that go out when there is an issue with a component monitor inside that application monitor. I have a custom property named "Escalation" created on the application with instructions saved there. The problem I'm having is including this in the email alert when an component goes into warning or critical status. I'm using the following:

Node: ${NodeName}

Application: ${ApplicationName}

Component: ${ComponentName}

Status: ${ComponentStatus}

Value: ${StatisticData}

Time Occurred: ${ShortDate} ${ShortTime}

URL: ${APM:ComponentDetailsURL}

Escalation: ${Application.Escalation}

This all works as intended,except for the Escalation line. I'm sure I'm just using the incorrect syntax for the variable. How can I get the "Escalation" property from the Application monitor to be included when a component of that application is warning?