Issue With Exception in Custom Task of Workflow

Hi All,

I am trying to raise exception in custom task of workflow by using custom Z class.

But in workflow log only variable are appearing instead of proper message, for example

"MESSAGE MSGV1 MSGV2 MSGV3 MSGV4"

And when we are executing the custom class through class builder SE24 message are getting properly with pop up.

So can someone please help me out with this issue.

Regards,

Kalpesh Patel