StoredProcedure and SQL Links for 3.5

I use SQL Links 3.5 with informix. Now when I try to execute a Stored
Procedure, I always get the error message 'The use of the operation is
impossible.' This error occur at the function DBIQSetProcParams. The
errorcode is 10756 and it is a BDE-Error.
When I use ODBC (driver Intersolve 2.12.32 BIT Informix7) and BDE
without SQL Link 3.5 I can execute the Stored Procedure.
Is there an error in SQL Links 3.5 for Informix? Does someone know how
to solve the problem?