                                 value="#{pharmacySaleReportController.category}"  
                                    style="text-align: left;"  
                                    completeMethod="#{pharmaceuticalItemCategoryController.completeCategory}"
                                    var="cat" itemValue="#{cat}" itemLabel="#{cat.name}"
                                    forceSelection="true" 
                                    requiredMessage="You must select a category" >
                    </p