Google Sheets conditional based on dropdown selection value

I have a Google Sheet with a cell (let's say its M4) that is a dropdown list that I created by:

1. Selecting the cell
2. Selecting Data>> Data validation>> Criteria>> List of items
3. Providing a comma-delimited list of values (RED,BLUE,GREEN)
4. Selecting Save

I am know trying to write a conditional formula for another cell (let's say its N4) based on the value selected of this M4 cell:

• if M4 is RED then I want the value of N4 to be 35
• else I want N4 to be 25

So I select N4 enter =if(M4=='RED',35,25) and click Enter.

I get #ERROR as the N4 value and when I mouseover it I see:

ErrorFormula parse error.

Where am I going awry?