     delivered = false
     result = null
 
-    Liquid.Helpers.unfuture variable, (err, variable) ->
-      result = liquify(variable)
+    Liquid.Helpers.unfuture variable, (err, variable) =>
+      result = @liquify(variable)
       f.deliver(err, result)
       delivered = true
 

          # If object is a hash- or array-like object we look for the
          # presence of the key and if its available we return it
          if isArrayAccess or isObjectAccess
            unfuture @lookupAndEvaluate(object, part), (err, result) ->
              object = liquify(result)
              next()

          else

            if isSpecialAccess
              object = switch part
                when "size"
                  @liquify(object.length)
                when "first"
                  @liquify(object[0])
                when "last"
                  @liquify(object[object.length-1])
                else
                  @liquify(object)

              next()

