create new attribute in the universal worklist

hi,

Anyone knows how to create new attribute in the universal worklist ?

I try:

in the UWL administration iview -->

Click to Configure Item Types and Customize Views Using a Wizard-->

Define custom attributes and customize the corresponding view-->

here i choose an existing configuration(uwl.webflow.SAP_CRM)-->

SAP_CRM-->

add attribute-->

and now in the window "personalize task" in the table

Current display attributes appear my new attribute called "prof" > save>

Select the systems that you want to search for the attributes--> SAP_CRM -->

apply to systems.

but this attribute not save..any idea??

thank you.