Numberer

if (input ==~ 'ni[0-9]+') {
    int counter = 1
    def maxNumber = input.replaceAll('[^0-9]', '');
    if (maxNumber == null) {
    return;
    }
    int intMaxNumber = maxNumber.toInteger();
    if (intMaxNumber>=40) {
    ui.informationMessage(ui.frame, "You've reached the limit!");
    } else {
    counter = 1
    def firstChild = node.createChild();
    firstChild.icons.add("full-" + counter);
    c.select(firstChild);
    while (counter++<intMaxNumber) {
        def lastChild = node.createChild();
        int decs = counter / 10;
        int ones = counter % 10;
        if (decs > 0) {
        lastChild.icons.add("full-" + decs);
        }
        lastChild.icons.add("full-" + ones);
    }
    }
}