Firebase Database (AngularFire) Structure (Push)

Ionic Framework ionic-v3
1

I have this database structure that I made with JSON

{
  "jobs" : [ null, {
    "id" : "1",
    "publisher" : "Test"
  }, {
    "id" : "2",
    "publisher" : "Test"
  } ]
}

but I don’t have the code to insert another entry there

I was using this code but it doesn’t do what I need exactly

var newJob = fdb.list('/jobs/' + this.jobID).push();
    	newJob.set({
    		'id' : this.jobID,
    		'publisher' : 'Test'
    	})

I need a .push() and .set() code to go properly with my existing structure