excel 365 formula gets curly brackets in old version

[shimonig]

Hello
I built a formula in Excel 365, without using array formulas. When I open the file in Excel 2019, the formula gets curly brackets and becomes an array formula that returns an error.
How can Masal 2019 be prevented from adding the curly brackets to the formula? 10X

[#2]

Can you perhaps upload a sanitized copy of your file with just the formula and the relevant cells it references so we might see the problem?