diff --git a/apps/dgiot_bamis/src/dgiot_bamis.erl b/apps/dgiot_bamis/src/dgiot_bamis.erl
index f1b0d5de..e8ee4a96 100644
--- a/apps/dgiot_bamis/src/dgiot_bamis.erl
+++ b/apps/dgiot_bamis/src/dgiot_bamis.erl
@@ -229,15 +229,13 @@ format_multilayer(Object) ->
                         NewV = format_value(V),
                         Acc#{K => NewV}
                 end;
-            (K, V, Acc) when is_binary(V) ->
-                case size(V) of
+            (K, V, Acc)  ->
+                case size(dgiot_utils:to_binary(V)) of
                     0 ->
                         Acc;
                     _ ->
                         Acc#{K => V}
-                end;
-            (_, _, Acc) ->
-                Acc
+                end
         end,
         #{}, MapWhere).
 
diff --git a/apps/dgiot_factory/src/dgiot_factory_channel.erl b/apps/dgiot_factory/src/dgiot_factory_channel.erl
index f3eebd9f..b357dcaf 100644
--- a/apps/dgiot_factory/src/dgiot_factory_channel.erl
+++ b/apps/dgiot_factory/src/dgiot_factory_channel.erl
@@ -31,6 +31,7 @@
 %% Channel callback
 -export([init/3, handle_init/1, handle_event/3, handle_message/2, stop/3]).
 -export([get_id/2, after_handle/4, handle_data/7, get_card_data/2]).
+-export([get_sub_product/1]).
 
 %% 注册通道类型
 -channel_type(#{