I need to retrieve the ALIAS of the child element in the service that triggered the alarm. For example, in the following image I have one service with 4 inputs, each is a child element of the service:

a correlation rule on the service triggers an automation to run, on this automation I gather the alarm information. But I can't find which child element or device the alarm came from. On the image you can see 2 parameters on Input 3 and 4, the one that triggered the alarm was Input 4 (You can see that is in yellow). I need to get the Alias or Input 4 so that I can create an IDX to gather some information from another element.
Please help, thank you!