Propath for progress odbc broker


We try to write in progress 9.1d with the odbc Merant 3.7
We have succeeded to write on some table. But table who have triggers give us an error message:

System.Data.Odbc.OdbcException: ERROR [HY000] [MERANT][ODBC PROGRESS driver][PROGRESS]** "triggers\write\item.p" was not found. (293)

The path of the triggers seems not been found. Where I have to put the Propath to make it work.
Is an argument on to oibrkr32.exe?

Need to add propath in HKCU\software\psc\progress\version\startup\