UWL and Launch task

hello guys,

we have plugged an UWL iview into the SAP EP 6 sp19.

a workflow is created on the backend. when we use the SBWP trasaction and run the WF task, a trasation is run in order to create a new material on the backend ...

whlie in the UWL the same task is not working .... a page is started when we click on Launch SAP task but this page prompt you to wait .... and never give back a result !!!!!

when a task works correctly into the SBWP ... do we hav to customize something on the portal side to make the same action working correctly ?

if yes could you drive me please, in order to make the "launch SAP task" button working correctly ?

best regards,

OlivieR.