How to set channel for backups using enterprise manager

Hi,

I have archive log back up running using crontab from the production AIX LPAR.

Archive log backup is running fine. We are trying to move the backup to OEM 13 CC.

I am listing running script.

RUN

{

allocate channel t1 device type sbt parms='ENV=(TDPO_OPTFILE=/c8c/product/tivoli/prodcdcs.opt)';

allocate channel t2 device type sbt parms='ENV=(TDPO_OPTFILE=/c8c/product/tivoli/prodcdcs.opt)';

#backup archivelog all FORMAT='%d_arch_%u_%p_%c.bkp';

backup archivelog all delete all input FORMAT='%d_arch_%u_%p_%c.bkp';

crosscheck archivelog all;

release channel t1;