Dynamic Orchestrator Http Request

[dcrt]

Hello,

I am using Orchestrator Http Request and i want to take the hostname as argument
Here is my endpoint:

“odata/Jobs?$filter=State%20eq%20%27Faulted%27%20and%20HostMachineName%20eq%20%27(MyHostname)%27&$select=Key”

How do i take hostname as argument?

Thanks in advance.