change workflow WS14000145

Hello,

I want to stop the approval wf WS14000145 from restarting after changing the output medium of PO.

I added an attribute called ispochange to the BOR BUS2201.

If ispochange = X then trigger WF if not do not trigger WF.

I added a start condition to the event CHANGEVERSIONSAVED.

But when i tested the issue, i got the following error:

Can anybody help me please.

Thanks,

Meriem.