logo URL

I'm using Simple Catch Pro. I want a custom logo to go to another web address than esc_url( home_url( '/' ) ) I can do this by editing "simplecatch_functions.php" as follows In the file simplecatch_functions.php on line no 233, is the following code:       $simplecatch_headerdetails .= '<h1 id="site-logo">'.'<a href="'.esc_url( home_url( '/' ) ).'" title="'.esc_attr( get_bloginfo( 'name', 'display' ) ).'">'; Replace the code with the following code: $simplecatch_headerdetails .= '<h1 id="site-logo">'.'<a href="'.'http://www.utoronto.ca/home.htm'.'" title="'.esc_attr( get_bloginfo( 'name', 'display' ) ).'">'; I've made a chid theme but can't get a function to modify function simplecatch_headerdetails() { There is a functions.php and a functions folder with simplecatch_functions.php What do I put in the child theme to update this one line of code? Thanks Bill