How to change bb press forum roles programmatically? - bbpress

Question

I have two user role
1)student
2)paid student
I have situation after the payment i am changing role student to paid student it work good but here i have also change the forum role programmatically to participant for paid student here . How do i change forum role programmatically using query, function anything.
Below code i have used to change user roles programmatically it works good but i am stuck d in changing forum role. i am looking something like this.
$user_id = get_current_user_id();
$oldrole=implode(', ', $user_id->roles);
if($oldrole=="student")
{
$u = new WP_User($user_id);
// Remove role
$u->remove_role('student');
$newrole="paid_student";
// Add role
$u->add_role( $newrole );
}

Answer 1

Finally i have got the answer.
Bellow are the step.
1) Get user current user id.
<?php $user_id = get_current_user_id(); ?>
2)set new user forum role you wish to change
<?php $new_role_forum_role="bbp_participant"; ?>
3)fire function.
<?php bbp_set_user_role( $user_id, $new_role_forum_role );?>
now check your user in back end and see forum user role.
Full snippet code
<?php
$user_id = get_current_user_id();
$new_role_forum_role="bbp_participant";
bbp_set_user_role( $user_id, $new_role_forum_role );
?>