>How set detail band to eject and continue printing on new page when it meet some criteria ?
>example...i have some data in a table
>transaction 1
>transaction 2
>transaction 3
>transaction 4
>new category (eject and print on new page)
>transaction 5
>transaction 6
>transaction 7
>transaction 8
>transaction 9
>transaction 10
>new category (eject and print on new page)
>transaction 11
>transaction 12
>new category (eject and print on new page)
>transaction 13

Create a data group and mark it to start on new page. A data group doesn't necessarily have to be a field in the data, it can be an expression that gets evaluated. Whenever the evaluated expression changes, a new data group is processed.