using mgocrud interfaces instead of mgo

filter.go

@@ -162,7 +162,7 @@ func _validateFilter(structT reflect.Type, f bson.M, checkValues bool) (bson.M,
 			valT := reflect.TypeOf(val)
 			if valT.Kind() == reflect.Slice {
 				l := len(val.([]interface{}))
-				newVal = make([]interface{}, l, l)
+				newVal = make([]interface{}, l)
 				for i := 0; i < l; i++ {
 					var err error
 					switch valF := val.([]interface{})[i].(type) {