Showing profile fields in the Members Directory items

Hi,

The bit of text  inside the members loop (attached) that says you can show specific profile fields to members displays in the members directory – it tells you to insert the field name:

bp_members_profiel_data( ‘field=the field name’ );

*Where do i make this change? Do i literally just change the bit where this text featrues above? or do i need ot insert this line somewhere else in the members loop file?

*Is there a way of limiting the number of characters that displays here? For example if you have an ‘About me’ profile field text area and somone weite 300 words, you dont want the whole 300 words featured. Can it be limited to a number of characters?

Kind regards