Close method in futures dual postion mode

[peacmake]

I would like to place an order to close a long position in futures dual position mode.
The API manual says "In dual position mode, to close one side position, you need to set auto_size side, reduce_only to true and size to 0",
so I coded and ran it as follows.

const params = { contract: symbol, size: 0, price: 0, auto_size:"close_long", reduce_only: true, tif: "ioc" };
createFuturesOrder("usdt", params);

If I run it, I see an 'invalid size with close-order' error message.

If I change that code to size: 1 and run it, a long position is created,
If I change size: -1, a short position is created.

How can I close my positions?

[zhouguanglong1]

maybe you can try by this way

const params = { contract: symbol, size: 0, price: 0, autoSize:"close_long", reduceOnly: true, tif: "ioc" };

[peacmake]

I solved it by changing line 868 of the node_modules/gate-api/dist/api/futuresApi.js source code as follows.

         // const config = {
         // method: 'POST',
         // params: localVarQueryParameters,
         // headers: localVarHeaderParams,
         // url: localVarPath,
         // data: models_1.ObjectSerializer.serialize(futuresOrder, 'FuturesOrder'),
         // };
         const config = {
             method: 'POST',
             params: localVarQueryParameters,
             headers: localVarHeaderParams,
             url: localVarPath,
             data: futuresOrder,
         };

models_1.ObjectSerializer.serialize(futuresOrder, 'FuturesOrder') is supposed to check the values of the input params and convert case to lowercase letters, etc., but there was a problem with the conversion of the auto_size part. But, I solved it by just changing that part of futuresApi.js without touching the model object code.