How to use getAddedItemsByName(String) method of NmCommandBean?

Hi Experts,

As per my understanding we have to pass the component ID in the getAddedItemsByName(String) method of NmCommandBean. But I am not able to get the required result using it. I want to get the WTPart from the Promotion  Objects table component of the Create Promotion notice Wizard. Guys please help me understand what need to be passed to the getAddedItemsByName(String) to get my desired output.