Hi! you are calling local variable the way you should call bind variables. so oracle things your variables are bind variables. you should not use ':' sign before variable names. anyway you should write it as

declare
v_city location.city%type := 0;
v_state location.state%type := 0;
v_status varchar2 := 0;
begin
getCityState(99004, v_city, v_state, v_status);
end;
/