Field

var docs = Context.Transaction.Documents; 
for (var d = 0; d < docs.length; d++) { 
    if (docs[d].ResultClass == "Invoice") { 
        var fields = docs[d].Fields; 
        
        // Find the "Vendor" field group 
        for (var f = 0; f < fields.length; f++) { 
            if (fields[f].Name == "Vendor" && fields[f].Children) { 
                
                // Suche nach „Address" innerhalb der untergeordneten Felder von Vendor 
                for (var c = 0; c < fields[f].Children.length; c++) { 
                    if (fields[f].Children[c].Name == "Address") { 
                        var address = fields[f].Children[c].Value; 
                        // Use the address value 
                        return address != ""; 
                    } 
                } 
            } 
        } 
    } 
} 
return false;