Hi Gordon, welcome and thank you for your question. My name is ***** ***** I am glad to assist you today.
Can you please send me the file you are working on so that I can directly check and build the formula for you? You can just remove sensitive information there if you want before sending it to me.
You can attach the file here when you reply using the paper clip icon, or you can upload it to http://filesXpress.com and then give me the short download link.
Please let me know by replying to me here so that I can help you further.