SSH Task stuck when the shell script done

I try to start weblogic server by SSH Task on Bamboo, when the SSH script done, and the weblogic server is running when I logging in the Linux server.But the Bamboo task always is running and not end.

the shell script:
workDir=/weblogic/domains/1213/rcs_domain/bin
cd $workDir
nohup ./startWebLogic.sh &