Formula Help

Good Morning,

Am having a bit of trouble coming up with the correct formula here at work. I am new to Excel Formulas and am hoping someone can help. I have attached my workbook that has 2 sheets. In worksheet Totals i have column F titled CPT. I need a formula that will match the values from each cell in column F to my worksheet titled CPT using column 1. If the match is found, return the value from worksheet CPT column 2. I thought this would be easy but my following formula isnt correct. Can anyone help me out?

=INDEX(CPT!$a$5:$a$511,MATCH($f$8,CPT!$b5:$b$511,0),2)

Thanks