<div class="cProduto-filtro-checkbox">
                        <?php

                            if(isset($_POST['Checkbox1']) && $_POST['Checkbox1'] ==  "1.00;29.99"){

                                $CheckboxVerif1 = "checked";
                                echo"CERTO";
                            }
                        ?>
                        <!--<input name="checkboxHide1002999" type="hidden" value="1002999">-->
                        <input type="checkbox" name="Checkbox1" id="1002999" value="1.00;29.99" <? echo"$CheckboxVerif1"; ?> >
                        <label for="checkbox99991">
                            <span>1,00 a 29,99</span>
                        </label>
                    </div>