Change Comment form submit label text

Hello, OceanWP, I want to change the label_submit text into other word.
I know I can edit comments.php file below

comment_form(
	array(
		...
	'label_submit' => esc_html__( 'Post Comment', 'oceanwp' ),
		...
	)
);

Just change 「Post Comment」to what I want. But now I use child-theme to edit, therefore it is useless edit comments.php under child-theme. Instead we should add some code in functions.php file.

I have tried add_filter on hook like 「comment_form_fields」、「comment_form_default_fields」, and my code is like

function yann_comment_form_fields($fields) {
    $fields['label_submit'] = esc_html__( '留言', 'oceanwp' );
    return $fields
}
add_filter('comment_form_fields','yann_comment_form_fields');

maybe there is some mistake or misunderstanding of using this hook or $fields variable. Could you please help me point out how can I do.

Thank you for your time.

• This topic was modified 6 years, 1 month ago by yannyann.

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