Passing parameter from workflow event to workflow task

Hi,

I have created a workflow for learning purpose where I want to display the material when a material is created. I have used Business Object BUS1001 and event Created.

Workflow is getting triggered when I create the material but the material number is not getting passed to the task( BUS1001 - Display).

What am I missing?

Please tell me how to find the problem and do troubleshooting to make this workflow work.

Thanks

Shailendra