<label for="numberOfShardsForDoc" class="col-sm-3 text-sm-right col-form-label"><la:message
                                            key="labels.number_of_shards_for_doc"/></label>
                                    <div class="col-sm-9">
                                        <la:errors property="numberOfShardsForDoc"/>

public class ActionForm {
    @Size(max = 10)
    public String replaceAliases;

    @Size(max = 10)
    public String resetDictionaries;

    @Size(max = 10)
    public String numberOfShardsForDoc = ComponentUtil.getFessConfig().getIndexNumberOfShards();

    @Size(max = 10)
    public String autoExpandReplicasForDoc = ComponentUtil.getFessConfig().getIndexAutoExpandReplicas();

        validate(form, messages -> {}, this::asIndexHtml);
        verifyToken(this::asIndexHtml);
        if (startReindex(isCheckboxEnabled(form.replaceAliases), isCheckboxEnabled(form.resetDictionaries), form.numberOfShardsForDoc,
                form.autoExpandReplicasForDoc)) {
            saveInfo(messages -> messages.addSuccessStartedDataUpdate(GLOBAL));
        }
        return redirect(getClass());
    }

    @Execute