put request mutation cannot pass form-data to backend program

[tytom2003]

updateProduct: builder.mutation({
query: ({product_id, productdata}) => ({
url: /product/${product_id},
//url: '/product/24',
method: 'PUT',
body: { productdata },
}),
invalidatesTags: ['Productmgmt']
}),

this is my program. i tried add header. it still cannot pass form-data to backend and backend program can't get url's product_id. I tried using postman apps to send form-data to backend. it is no error.
if i send data to useUpdateProductMutation() in component, backend program will get undefined.

How to solve the problem? Thank you very much.

my program have using post mutation to send data. it is no error.

headers: {
'Content-Type': 'multipart/form-data;'
},

In component send data to updateProduct Mutation:

const [ updateproduct ] = useUpdateProductMutation()
formdata.append("product_name", product.product_name);
formdata.append("product_price", product.product_price);
formdata.append("file", imagefile)

updateproduct(product.product_id, formdata)

version:
nodejs: V20.12.2
"@reduxjs/toolkit": "^2.3.0"

[tytom2003]

i solved the problem. Since, my reactjs program can send form-data to usequery mutation. So, it cannot send data to backend program.
Thank you very much.