“This value must be greater than or equal to 1 “

how can i fix this?

{
“amount”: “10”,
“currency”: “JPY”,
“payment_method_types”: {
“0”: “card”
},
“statement_descriptor”: “my website title”,
“description”: “please enter fee”,
“metadata”: {
“Email”: “email adress”,
“Donation Post ID”: “455”,
“Sequential ID”: “4”
},
“customer”: “cus_aaaaaaaaaaaaa”,
“payment_method”: “pm_aaaaaaaaaaaaaaaaaa”,
“confirm”: “true”,
“return_url”: “https://myswebite.net/donation-confirmation/”,
“application_fee_amount”: “0”
}
Response
{
“error”: {
“code”: “parameter_invalid_integer”,
“doc_url”: “https://stripe.com/docs/error-codes/parameter-invalid-integer”,
“message”: “This value must be greater than or equal to 1.”,
“param”: “application_fee_amount”,
“type”: “invalid_request_error”
}
}