Overload Timesheet -> Add new View for "Year"

Developing for Dolibarr
1

Hello,

I try to overload the project_timesheet_prepare_head-Function from core/lib/project.lib.php so set a YearView left to the Month-View:

<?php

function project_timesheet_prepare_head($mode, $usertoprocess)
{
    global $langs;

    $head = array();
    $h = 0;

    // Day
    $head[$h][0] = dol_buildpath("/projet/activity/perday.php", 1)."?id=".$usertoprocess;
    $head[$h][1] = $langs->trans("Day");
    $head[$h][2] = 'inputperday';
    $h++;

    // Week
    $head[$h][0] = dol_buildpath("/projet/activity/perweek.php", 1)."?id=".$usertoprocess;
    $head[$h][1] = $langs->trans("Week");
    $head[$h][2] = 'inputperweek';
    $h++;

    // Month
    $head[$h][0] = dol_buildpath("/projet/activity/permonth.php", 1)."?id=".$usertoprocess;
    $head[$h][1] = $langs->trans("Month");
    $head[$h][2] = 'inputpermonth';
    $h++;

    // Year (neu)
    $head[$h][0] = dol_buildpath("/custom/winzig/peryear.php", 1)."?id=".$usertoprocess;
    $head[$h][1] = $langs->trans("Year");
    $head[$h][2] = 'inputperyear';
    $h++;

    return $head;
}

In my module-Class I’ve added:

        $this->module_parts = array(
            'hooks' => array(
                 'contactlist',
                 'thirdpartylist'
            ),
            'overload' => array(
                'core/lib/project.lib.php' => 'winzig/lib/project.lib.php'
)

        );

But the Overload don’t work.

Am I using it correct?