FormulaR1C1, How to make R1C1 = blank

I am having trouble figuring out how to make a formula that shows x=blank. I thought it would just be x = "", but I am getting a run-time error. I know this is where the error is, because when I place a 0 in the "", it runs. What is the proper syntax for writing this portion of my formula?

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...and I just figured it out. I needed to double up the quotes. So it looks like = """"