pleRevert" 
                                    action="#{patientInvestigationController.revertMarkedSample()}" 
                                    process="chkSampledOutside calSampledDate btnSampleRevert" 
                                    update="@all"
                                    icon="fa fa-undo" 
                                    styleClass="ui-button-warning m-2"
                                    title="Revert"
                                    >
                                    <f