Assign message policy not reading json variable properly

[#1]

jsontestassignmessage-rev1-2016-03-21.zipI have Assign message policy which reads a header variable.The header variable is populated with json message.

While reading that header variable,Assign message policy is not reading once it encounters comma in the json message.How to solve this issue?

For this input below,

{ "Fruits": [ { "Name": "Apple",Count": "20"}, { "Name": "Mango",Count": "30"}] }

Assign message policy:

<AssignVariable> <Name>Fruit</Name> <Value/> <Ref>request.header.Fruit</Ref> </AssignVariable>

Output variable "Fruit":

{ "Fruits": [ { "Name": "Apple"

But when I provide input as,

{ "Name": "Apple"}

Output variable "Fruit":

{ "Name": "Apple"}

I have also attached the Proxy bundle.