function onEdit(e) {

    range = e.range;
    sheet = range.getSheet();

    if (sheet.getName = "ПЛАТЬЯ, САРАФАНЫ") {
        if (RangeIntersect(range,sheet.getRange("B4:K8"))) {
            if (range.getValue()) range.setValue(2*range.getValue()); // если не 0
        }
    }  
}

function RangeIntersect(R1, R2) {
// (c) https://stackoverflow.com/questio....; 

    var LR1 = R1.getLastRow();
    var Ro2 = R2.getRow();
    if (LR1 < Ro2) return false;
  
    var LR2 = R2.getLastRow();
    var Ro1 = R1.getRow();
    if (LR2 < Ro1) return false;
  
    var LC1 = R1.getLastColumn();
    var C2 = R2.getColumn();
    if (LC1 < C2) return false;
  
    var LC2 = R2.getLastColumn();
    var C1 = R1.getColumn();
    if (LC2 < C1) return false;

    return true;
}