I have the following settings of my chart:
'sizeX' => 17, 'sizeY' => 8, 'jc' => 'center', 'chartAlign' => 'center', 'legendPos' => 'l', 'border' => '1', 'type' => 'barChart', 'hgrid' => '1', 'vgrid' => 0, 'color' => '2', 'showValue' => true,
I can't insert image here to show my chart, but the bars on it are side by side, without margings. What property can I add to make spaces between bars?