Changing the Prev/Next Font Awesome Icons for my Testimonial Rotator

prev-next-button-filters.php

// HORIZONTAL SCROLLING AND FADING
function hg_change_next_icon()
{
	return 'fa-arrow-circle-o-right';
}
add_filter('testimonial_rotator_fa_icon_next', 'hg_change_next_icon');

function hg_change_prev_icon()
{
	return 'fa-arrow-circle-o-left';
}
add_filter('testimonial_rotator_fa_icon_prev', 'hg_change_prev_icon');


// VERTICAL SCROLLING
function hg_change_vert_next_icon()
{
	return 'fa-arrow-circle-o-up';
}
add_filter('testimonial_rotator_fa_icon_next_vert', 'hg_change_vert_next_icon');

function hg_change_vert_prev_icon()
{
	return 'fa-arrow-circle-o-down';
}
add_filter('testimonial_rotator_fa_icon_prev_vert', 'hg_change_vert_prev_icon');