phtmlb:progressIndicator

Hello,

1) I display the selection fields of an ABAP Program in a BSP page

2) I call the ABAP Report from the BSP-page (OnInputProcessing)

3) the program reads data an prints a list out

4) this list is in the browser displayed

everything is Ok, but now I´d like to insert a progress bar or something, so that the user knows that the report is searching for data. I thing that the BSP extension phtmlb:progressIndicator should do it but my problems is:

how do I tell it from OnInputProcessing that it should display the progress in the layout, especially in succesive steps (10%, 20% 40%, etc.) ??

Has any one an idea ?? Thanks a lot