I would like to create an xml element that will have dynamic number of attributes, something like this where n will change and $value_1 to $value_2 will be provided by outside

element book {
 attribute isbn_1 {$value_1}
attribute isbn_2 {$value_2}
attribute isbn_3 {$value_3}
.
.
.
attribute isbn_n {$value_n}
}

Can we do it?

Thanks