EDIT

    private Float start;

    private Float end;

    public FloatWithLabelElement(CdmFormFactory toolkit, ICdmFormElement parentElement, String labelString,

            Number initialNumber, int style) {

        super(toolkit, parentElement, labelString, initialNumber, style);

    }

    @Override

    public void modifyText(ModifyEvent event) {

        String value = text.getText();