[wpman]

I want to display some value in first reply(new topic content). Which function I should hook ?
This is position

[Robkk]

Well there are these if you do not have show topic lead enabled.

add_action( 'bbp_theme_before_reply_content', 'function_name' );		
add_action( 'bbp_theme_after_reply_content', 'function_name' );	

You may need to use a conditional to only display your value on the first reply/topic if they have the same ID.

if ( bbp_get_reply_id() == bbp_get_topic_id() ) {

[wpman]

Thanks,it work!