I have list of issues which contain certain set of fields (6 custom fields) these fields can be have values only "A"or "B". the my question is how can I filter those issues if one these field have a value "A". let say for a example these custom fields are cus_field1,cus_field2,cus_field3,cus_field4,cus_field5,cus_field6 and if one these field have certain value how can I filter those issues?