How do you access structs within structs in perl?

[Licursi]

Hi,
I have 2 embededded structs within a struct in perl and need to access these values. Can someone please give me the systax for this? It is similar to:

struct a
{
char value_1;
};

struct b
{
char value_2;
}

struct Full
{
struct a;
struct b;
}

What is the syntax in PERL to access char1/char2?

Thanks!