AXAPTA - Default Currency and Language

    custTable.Currency   = CompanyInfo::standardCurrency();
    custTable.LanguageId = Companyinfo::languageId();

AXAPTA - Change Company

        Header.parmShippingDateRequested(this.ShippingDateRequested);
    changecompany(TargetCompanyId)
    {
        Header.parmQuotationId();
        Header.parmCurrencyCode(CompanyInfo::standardCurrency());
        ...
        Header.save();
    }