How to customize wordpress theme sidebar?

i have using word-press theme want to show some field (category,Blog-roll etc) only on index page sidebar
after added code
<?php /* If this is the frontpage */ if ( is_home() || is_page() ) { ?>
side showing blank
any guy guide me what i do



here is our theme sidebar code
-------------------------------------------------------------------
<?php global $theme; ?>

<div class="sidebar-secondary">

<?php
if(!dynamic_sidebar('sidebar_secondary')) {
/**
* The secondary sidebar widget area. Manage the widgets from: wp-admin -> Appearance -> Widgets
*/
$theme->hook('sidebar_secondary');
}
?>


</div><!-- .sidebar-secondary -->

 

which theme your are using?

 

im using NewsReport theme fthemes.com/newsreport-free-wordpress-theme/

 

i suggest you to use "Widget Context" Plugin, thru which you can control, sidebar widgets.