Add If statement in Expression in Report service

Question

Hello  All 

i have table in report in this table filed view  number  

i want this number replaced by name

i have just 4 numbers ( 0-1-2-3)

if this id = 0 want  write "name 1"

if this id = 1   write "name 2"

if this id = 2   write "name 3"

if this id =3   write "name 4" 

 

i try expression

 where can i write if in this screen