Need a better descriptive handlebar variable alias

Question

First off, this is working just perfectly (doesn't mean there isn't room for improvement so tips are welcomed here as well). My concern though is in a year from now when I need to make an edit, I won't have a clue what any of this means if I leave this as-is so I'm looking for a way to better my code.

var handleActivityEdit = function(id){
    var myContainer = $("#myContainer");
    $.ajax({
        url: "/?go=foo.bar&json",
        type: "post",
        dataType: "JSON",
        data: 'ID=' + id,
        cache: false
    }).then(
        function(response) {
            var html = myContainerTemplate({ 
                viewData: response.data.activityName.DATA
            });
            myContainer.html(html);
        },
        function() {
            console.log("OH SNAP!");
        }
    );       
}

The handlebar template look looks like this (simplified for clarity here) and specifically the {{1}} is what I'd like to know if there is a way to change this variable name (e.g. in SQL, you can do select thisColumnName as ThatColumn).

<ul>
    {{#each viewData}}
        <li>{{1}}</li>
    {{/each}}
</ul>