Spawn a template, or hide a page?

I am trying to do two things here. Part 1 works, but the spawning piece is off. Help, please, and thank you.

I have created the template and it is hidden.

//enters full name of child when child is 12 or over//

//spawns new page CARITemplate when child is 12 or over//

//otherwise blank//

var child = this.getField("ChildAge").value;
var childFirst = this.getField("ChildFirstName").valueAsString;
var childMiddle = this.getField("ChildMiddleName").valueAsString;
var childLast = this.getField("ChildLastName").valueAsString;

if (child < 12) {event.value = ""};
else {event.value = childFirst + " " + childMiddle + " " + childLast;}

AND this.getTemplate("CARITemplate").spawn(this.numPages, false, false);