Conditional formatting for a range

Hi!

I am working on a file where I have to format the cells in one column based on a list place in the same sheet in a different column. Basically what I need is: check if the value on that cell matches with the list that is in the other column. If it matches, then change the cell color.

I am trying to do it using the conditional formatting, the formula section (using "match" formula), but it is not working. I tried already different formulas and I got all the time the same response saying: you can't use conditional formatting for a range of cell.

Can you help me?

Thanks!!