Baidu map coordinate js interface cannot call function

cannot call translateCallback function to report an error
< script type= "text/javascript" >

// API
//GPS
var x = 116.32715863448607;
var y = 39.990912172420714;
var ggPoint = new BMap.Point(x,y);

//
var bm = new BMap.Map("allmap");
bm.centerAndZoom(ggPoint, 15);
bm.addControl(new BMap.NavigationControl());

//gps markerlabel
var markergg = new BMap.Marker(ggPoint);
bm.addOverlay(markergg); //GPS marker
var labelgg = new BMap.Label("GPS",{offset:new BMap.Size(20,-10)});
markergg.setLabel(labelgg); //GPS label

//
//translateCallback   
translateCallback = function (data){
  if(data.status === 0) {
    var marker = new BMap.Marker(data.points[0]);
    bm.addOverlay(marker);
    var label = new BMap.Label("",{offset:new BMap.Size(20,-10)});
    marker.setLabel(label); //label
    bm.setCenter(data.points[0]);
  }
}

setTimeout(function(){
    var convertor = new BMap.Convertor();
    var pointArr = [];
    pointArr.push(ggPoint);
    convertor.translate(pointArr, 1, 5, translateCallback)//translateCallback  Uncaught SyntaxError: Unexpected token :
}, 1000);

< / script >
/ / error message