Linq dynamic Where clauses by string

Question

i have some problem with universal method in C#, i have 4+ model classes like this:

public class Assortment{
     public string Code { get; set; }

     public string EANCode { get; set; }

     public float Quantity { get; set; }
}

i want to create universal logic method liek this ->

public T GetItem<T>(int someInt, string expression) where T : class
{
     return db.Set<T>().Where(expression).Select(x=>x);
}

is this posible?