Consume Rest Service POST with interval

[Anonymous]

I consume the rest Service with connector of rest service, this rest service is post and need a token but the moment when execute code, send error

My body in connector is this

{

  "interval": "2017-04-07T04:00:00.000Z/2017-04-08T04:00:00.000Z",

        "groupBy": [ "queueId" ],

  "timeZone": "America/Santiago"

}

and my code is

LIB CONNECT TO 'Indicadores';

LET vRequestBody =''; 

LET vRequestBody = vRequestBody & '{"interval": "$(vFechaInicio)&'/'&$(vFechaFin)"&,"groupBy": [ "queueId" ],

  "timeZone": "America/Santiago"}';

LET vRequestBody = replace(vRequestBody,'"', chr(34)&chr(34));  

RestConnectorMasterTable:

SQL SELECT

  "__KEY_results",

  (SELECT

  "mediaType",

  "queueId",

  "__FK_group"

  FROM "group" FK "__FK_group"),

  (SELECT

  "interval",

  "__KEY_data",

  "__FK_data",

  (SELECT

  "metric",

  "__KEY_metrics",

  "__FK_metrics",

  (SELECT

  "max",

  "min",

  "count",

  "sum",

  "ratio",

  "numerator",

  "denominator",

  "__FK_stats"

  FROM "stats" FK "__FK_stats")

  FROM "metrics" PK "__KEY_metrics" FK "__FK_metrics")

  FROM "data" PK "__KEY_data" FK "__FK_data")

FROM JSON (wrap off) "results" PK "__KEY_results"

WITH CONNECTION (

HTTPHEADER "Authorization" "bearer $(vAccessToken2)",

BODY "$(vRequestBody)"

);