I want to find data in sheet and want to return ‘True’ if is in or ‘false’.

In this case, I want to find data ‘01033658098’ number in ‘New 대시보드 V3’ sheets.

But failed..
Why?
I want to find data in sheet and want to return ‘True’ if is in or ‘false’.

In this case, I want to find data ‘01033658098’ number in ‘New 대시보드 V3’ sheets.

But failed..
Why?
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