When configuring a JSON tree, the default type of an element is string. If an
element is not of type string, you need to add an
attribute for the element to set its type.

• For an integer, double, float, or
  boolean element, you need to add an
  attribute named type and set its static
  value to integer, number, float, or boolean respectively.

• For an array element, you need to add
  an attribute named class and set its static
  value to array, and then add a sub-element
  named element set as a loop.

• For an object element, you need to add
  an attribute named class and set its static
  value to object.

The following figure shows an example of JSON tree configuration: