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I'm not sure if it's the right section. Please let me know if it is not.

I've added some custom information from the database in global.php file.

What I have added:

$dona = $db->simple_select('donaciones', 'SUM(amount) AS amount', "amount - comision > 0");
$donaAmount = 0;
$donaTarget = 15;
$donaPercent = 0;
$donata = $db->fetch_array($dona);
$donaAmount = $donata['amount'];
$db->free_result($dona);

$donaPercent = $donaPercent != 0?round(($donaAmount*100)/$donaPercent):0;
$donaAmount = round($donaAmount,2);
if ($donaPercent > 100){
    $donaPercent = 100;
}

Then I edited the header template. I've added:

<div style="display: inline; position: relative; top: -9px;">Objetivo: ${$donaTarget} &nbsp;USD - Cantidad: ${$donaAmount} - Porcentaje: ${$donaPercent}</div>

When I try to save the template it says:

A potential security issue was found in the template.

If I delete my custom vars, the template is saved as expected.

I've found some threads about the same error, but none of them could solve my specific problem.

Thanks in advane.

${$xxx} = variable variables in PHP, which are disallowed by MyBB's template security regex checks. You should add the $ character to a string, e.g. $donaTarget = '$15';