Converting XML TO JSON using "FormatConversionBean" MODULE in the REST Adapter"

Dear SAP Experts,

I am converting XML TO JSON using module formatConversionBean in REST receiver Channel.After conversion i am getting JSON Structure as below.

{

----

----

}

Expected JSON structure is as below.Kindly help me in addding that arrray bracket on the top.

[

{

----

-----

}

]

Thanks & Regards,

Neelima