How to make the cell blank if the other cells used in my formula are blank?

Hi everyone,

I'm new to using formulas in SmartSheet.

I currently have a formula for one of my rows which works properly (thanks to the help of a member here!):

"=IF(GLP@row <> "YES", IF([Expiration Date]@row < TODAY(), "YES", "NO"), IF([Expiration Date]@row < TODAY(-365), "YES", "NO"))"

(Basically, the cell marks "YES" if a product is not "GLP" and the "expiry date" is expired, but if the product is "GLP" it will mark "NO", until one year after "expiry date").

Anyway, the problem is: when there are no values in the "GLP" cell and/or in the "Expiry Date" Cell (ie. the 2 cells are empty), the cell will by default mark "YES".

But I would like this cell to be empty if the "GLP" and "Expiry Date" cells are empty. (And not mark "YES" by default).

What could I add to my formula in order to obtain this? (I have tried adding various "ISBLANK" statements, but they don't seem to fit in).

I really would appreciate any advice.

Thank you in advance!


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