settxfee amount
Set the transaction fee per kB for this wallet. Overrides the global -paytxfee command line parameter.
Can be deactivated by passing 0 as the fee. In that case automatic fee selection will be used by default.
Arguments:
1. amount (numeric or string, required) The transaction fee in XEC/kB
Result:
true|false (boolean) Returns true if successful
Examples:
> bitcoin-cli settxfee 0.00001
> curl --user myusername --data-binary '{"jsonrpc": "1.0", "id": "curltest", "method": "settxfee", "params": [0.00001]}' -H 'content-type: text/plain;' http://127.0.0.1:8332/