Web Functions: 2 FILTER 2 IOBJNM

I'm trying to apply the solution outlined by Heike Guder, who kindly responded to my previous question several days ago. (Web: Linking Similar Objects)

Can anyone help with the exact syntax to allow simultanious filtering (based on drop-down selection) of two tables which both include cost centre, but with different names, i.e.

0COSTCENTER: Cost center is a characteristic

0COORDER__0RESP_CCTR: Responsible Cost Center is a navigable attribute of Order

Here is one of very many combinations I have tried...

<SAP_BW_URL MULTI='X'

DATA_PROVIDER_1='ORDERVIEW' FILTER_IOBJNM_1='0COORDER__0RESP_CCTR'

DATA_PROVIDER_2='COSTCENTREVIEW' FILTER_IOBJNM_2='0COSTCENTER'>

Any suggestions greatly appreciated,

Rob