Handlebars and property names
===

In js there are 2 ways to get property value of an object:
1) obj.property
2) obj[property]

My problem is that: second way does not work in Handlebars.

I have code:

    <template name="client_view">
        <tr>
            {{#each columns}}
                <td>
                    {{../this[this]}}
                </td>
            {{/each}}
        </tr>
    </template>

It`s an template for 'client' with any properties, which should display values of these properties, but only those which contains in 'columns' variable.
For each column, client is parent context and column is current context.
This code does not work. How can it be solved?

P.s.: it`s Meteor.js