Phpexcel chart showing by previous chart data

Jul 30 at 12:33 PM
I need to show two chart with different data.

first chart by project data example :

$objWorksheet->fromArray(
    array(array('projects','p1', 'p2', 'p3', 'p4', 'p5'),
        array('',10,15,25,35,45)
    )
);
Second chart by weekly data example:
$objWorksheet->fromArray(
        array(
            array('',   'sun',),
            array('Mon',  $mon),
            array('Tue',   $tue),
            array('Wed',   $wed),
            array('Thu',   $thu),
            array('Fri',   $fri),
        )
    );
problem is , chart 1 (with first project) generated , it generated with values form chart 2(with weekly data). how to fix this, problem? so chart1 (project) only show project data/value , not from weekly data?

problem chart attached here:
Image