How can I make an case statement to set a cash cap for a particular person in sql?

So I am working on a compensation report and one of the requirements is that One particular person has a different cash cap than everyone else. My solution was instead of making a parameter I want to make a query that the output is dependent on the person. EX) if person= particular person than cash cap = 15,000 otherwise cash cap=10000. This is what I have so far but it gives me an error.

[my code]

error message

I'm not sure how to fix this syntax issue. Im still new to sql so Im not too sure.