as I'm not that good in coding i have a small issue in my code that i need to find a solution for it. my code bellow that i made is to transfer data from one sheet to another one based on value on a specific cell, that it's working perfectly, but for another case that i have i need to make double conditions for my if statement that they need to be both of them true so it can work, first condition it's the one that i already made, and the second one is i want to check if the cell number 12 is not empty.

for (i = 1; i < dataValues.length; i++) {
    if (dataValues[i][11] === 'COMMANDE CONFIRMER' && ) {
        pasteSheet.appendRow([dataValues[i][0],
            dataValues[i][1],
            dataValues[i][2],
            dataValues[i][3],
            dataValues[i][4],
            dataValues[i][5],
            dataValues[i][6],
            dataValues[i][7],
            dataValues[i][8],
            dataValues[i][9],
            dataValues[i][10],
            dataValues[i][11]]);

        var clearRow = i + 2;
        copySheet.getRange('A' + clearRow + ':L' + clearRow).clearContent();
    }
}