Get request, unable to get multidimensional array parameters

[fancyecommerce]

// trace info
type TraceInfo struct{
    Id_ bson.ObjectId `form:"_id" json:"_id" bson:"_id"` 
    Search SearchInfo `form:"search" json:"search" bson:"search"`
}

// search
type SearchInfo struct{
    Text string `form:"text" json:"text" bson:"text"`
    ResultQty string `form:"result_qty" json:"result_qty" bson:"result_qty"`
}

func SaveJsData(c *gin.Context){
    var traceInfo TraceInfo
    err := c.ShouldBindQuery(&traceInfo);
    if err != nil {
        c.AbortWithStatusJSON(http.StatusOK, util.BuildFailResult(err.Error()))
        return
    }
}

when i access http://xxxx:3000/fec/trace?search[text]=dress&search[result_qty]=13

can not get this search param，empty:

 "search": {
     "text": "",
     "result_qty": "" 
  }