Clonable group

Hello Long

I created a group of custom fields.
I initially inserted a clonable group, (fiscal_data). Within the Group I placed 4 text fields (fiscal_name, fiscal_domain, document, fiscal_ariate).

I need to show them in php.

I think I should use this code:

$ values ​​= rwmb_meta ($ field_id);
foreach ($ values ​​as $ value) {
echo $ value;
}

But I can not.

Can you exemplify for me?

Thanks