Below is sample code that uses CANCapture's built-in scripting ability to transmit a multipacket broadcast announce message (BAM) according to the SAE J1939 transport protocol.  The source code contains a function that can also be used in other scripts to easily add support for transmitting BAMs.

Here is a link that includes the script and a sample workspace to transmit BAMs onto the CANbus: BAM sample workspace - This workspace requires CANCapture V2.1 or greater.