[Cant read memlong from PLC]

I have a Visual Basic 2008 (and use UnCmDrv1.dll)

I can read and write O, I, MB, and MI.

but when i try to read T og ML it will not work, and i got this message:

SafeArrayTypeMismatchException was unhandled

here is a bit of code:

Dim iMI() As Short

Dim iMB() As Byte

Dim iML() As Long

Dim iOut() As Byte

ReDim iOut(14)

Call mComDriver.Read_Outputs(0, 14, iOut, 2) 'OK work

ReDim iMI(1)

Call mComDriver.Read_MemIntegers(601, 1, iMI, 1) 'OK Work

ReDim iMI(1)

Call mComDriver.Read_TimersCurrent(6, 1, iMI, 1) 'don't work

ReDim iML(1)

Call mComDriver.Read_MemLongs(6, 1, iML, 1) 'don.t work

Is there something wrong here or maybe something other?