QM - Task to Create ProdOrder

Dear all,

I have created a task in QM to create a production order from QM-Message. First function call creates the prodOrder with fb: "co_ko1_order_entry_ext" and is working. While saving the QM Message the second step to this task is run using FB "CO_ZV_ORDER_POST". Now I have the real ProdOrder Number. So my problem is how to update the task text "VIQMSM-MATXT"?

Anybody an idea?

Thanks for help

Regards

Roman