I have just found CODO and I feel so excited. I am trying to apply it into manage my Zumba class (I am a Zumba instructor) but I met some issues:
- I have a table Card_List including (Card no, Member,…)
- I have a table Slot_List with the Display column is Card No (Lookup from table: Card number column of table Card_List). I tried to write the function for the next column to return the Member of that card. I use lookup() and filter() but it keep returning null array frowning_face:
My funtion:
=[Cards_List].Filter([CARD NO]=thisRow).Member
I think I was wrong at something but I dont know how to embed the doc here.
Can you please help me with that?
Thanks
Hi and welcome to Coda. 
It’s hard to say just by looking at the formula but it looks like the problem is with the filter comparison to thisRow. “thisRow” is a reference to the entire row but it looks like you want to check a particular column in the row, so it might be you need something like:
=[Cards_List].Filter([CARD NO]=thisRow.[CARD NO]).Member
(or something similar).
If that’s not it can you share the doc here for us to look at? Thanks.
Thanks Nick_Milner,
You are so quick :D. I have just read this artical and find out the reason:
so I logged in to delete the post and see your answer.
As I mentioned, I dont know how to share the doc 
Hope to learn more from you.
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Glad you solved your problem whichever way. 