Hi Martin,
My apologies for the delay.

1. Please upgrade to Bp Simple Front End post plugin

2. Please try adding this code to bp-custom.php and let me know if it works or not?

add_filter( 'buddyblog_post_form_settings', 'buddyblog_martin_custom_fields' );
//modify buddyblog form settings
function buddyblog_martin_custom_fields( $settings ) {
	
	$custom_fields = $settings['custom_fields']; //already registered fields
	
	//allowed field
	//1. textbox
	//2. texarea
	//3. radio
	//4 .select
	//5 .checkbox
	//6. date
	//7. url
	//. number(integer)
	//7. hidden
	
	$custom_fields['synopsys']	= array( //on single page use get_post_meta( $post_id, 'synopsys', true ) to access it
			'label'		=> 'Synopsis',
			'type'		=> 'textarea',
			'default'	=> '', 
			
		);
	$custom_fields['genre']	= array( 
			'label'		=> 'Genre',
			'type'		=> 'textarea', //change to textbox for single line text field
			'default'	=> '', //in case of
			
		);
	$custom_fields['cast']	= array( 
			'label'		=> 'Cast',
			'type'		=> 'textarea',
			'default'	=> '', //in case of
			
		);
	$custom_fields['release_date']	= array( 
			'label'		=> 'Release date',
			'type'		=> 'date',
			'default'	=> '', //in case of
			
		);
	
	$custom_fields['budget']	= array( 
			'label'		=> 'Budget',
			'type'		=> 'number',
			'default'	=> '', //in case of
			
		);
	$custom_fields['twitter']	= array( 
			'label'		=> 'Twitter',
			'type'		=> 'url',
			'default'	=> '', //in case of
			
		);
	$custom_fields['ratings']	= array( 
			'label'		=> 'Ratings',
			'type'		=> 'checkbox',
			'default'	=> '', //in case of
			 //only applicable for select/radio/checkbox etc
			'options'	=> array(
				array(
					'label'	=> 'Y',
					'value'	=> 'Y'
				),
				array(
					'label'	=> 'T7',
					'value'	=> 'T7'
				),
				array(
					'label'	=> 'G',
					'value'	=> 'G'
				),
				array(
					'label'	=> 'PG',
					'value'	=> 'PG'
				),
				array(
					'label'	=> '14',
					'value'	=> '14'
				),
				array(
					'label'	=> 'MA',
					'value'	=> 'MA'
				),
			)
		);
	
	$settings['custom_fields'] = $custom_fields;
	
	$settings['upload_count'] = 1;//one upload
	
	return $settings;
	
}

Thank you
Brajesh

Hi Joshua,
Thank you.

I am always happy to be of some help 🙂

Hi Joshua,
This is a little old code I wrote but it does the same thing. Try putting it in your bp-custom.php and let me know how it goes.

http://pastebin.com/9NZMs6je

Thank you
Brajesh