OpenEdge JSON with a extent propertry

I'm having trouble reading a JSON that has a extent[6] data property.
This is the JSON:

{  
    "SalesRep": [  
        {  
            "SalesRep": "BBB",  
            "RepName": "Brawn , Bubba B.",  
            "Region": "East",  
            "MonthQuota": [  
                1600,1648,1697,1748,1800,1854  
            ]  
        }  
    ]  
}

I want to read the second numerical value (extent[2]=1648).

This is my pgm:

myParser    = NEW ObjectModelParser( ).  
myConstruct = myParser:ParseFile("JsonRaro.json").  
myJsonObj2 = CAST(myJsonObj1:GetJsonArray("ttSalesRep"):GetJsonObject(1),JsonObject).  
MESSAGE  
    "2 " STRING( myJsonObj2:GetJsonText("RepName") ) SKIP /*result="2 Brawn , Bubba B."*/  
    "3 " STRING( myJsonObj2:GetJsonText("MonthQuota") ) SKIP /*result="
                                                          [1600,1648,1697,1748,1800,1854]"*/  
    "3a " STRING( myJsonObj2:GetJsonArray("MonthQuota"):GetJsonArray(2,1) ) SKIP /*ERROR*/  
VIEW-AS ALERT-BOX.

Message result

You only need to get the item from the array, not another array.

So this

 "3a " STRING( myJsonObj2:GetJsonArray("MonthQuota"):GetJsonArray(2,1) )

should be

 "3a " STRING( myJsonObj2:GetJsonArray("MonthQuota"):GetInteger(2) )