Problem with a c structure

Hello,

I am trying to create an application that uses this structure:

*class ISD_STATION_INFO_TYPE (ctypes.Structure):
    _fields_=[('ID',ctypes.c_ulong)
              ,('State',ctypes.c_long)
              ,('Compass',ctypes.c_long)
              ,('InertiaCube',ctypes.c_long)
              ,('Enhancement',ctypes.c_ulong)
              ,('Sensitivity',ctypes.c_ulong)
              ,('Prediction',ctypes.c_ulong)
              ,('AngleFormat',ctypes.c_ulong)
              ,('TimeStamped',ctypes.c_long)
              ,('GetInputs',ctypes.c_long)
              ,('GetEncoderData',ctypes.c_long)
              ,('CompassCompensation',ctypes.c_byte)
              ,('ImuShockSuppression',ctypes.c_byte)
              ,('UrmRejectionFactor',ctypes.c_byte)
              ,('bReserved2',ctypes.c_byte)
              ,('CoordFrame',ctypes.c_ulong)
              ,('AccelSensitivity',ctypes.c_ulong)
              ,('fReserved1',ctypes.c_float)
              ,('fReserved2',ctypes.c_float)
              ,('TipOffset',ctypes.c_float*3)
              ,('fReserved3',ctypes.c_float)
              ,('GetCameraData',ctypes.c_long)
              ,('GetAuxInputs',ctypes.c_long)
              ,('GetCovarianceData',ctypes.c_long)
              ,('GetExtendedData',ctypes.c_long)]*

that comes from this structure in c:

*typedef struct
{
    DWORD   ID;
    Bool    State;
    Bool    Compass;
    LONG    InertiaCube;
    DWORD   Enhancement;
    DWORD   Sensitivity;
    DWORD   Prediction;
    DWORD   AngleFormat;
    Bool    TimeStamped;
    Bool    GetInputs;
    Bool    GetEncoderData;
    BYTE    CompassCompensation;
    BYTE    ImuShockSuppression;
    BYTE    UrmRejectionFactor;
    BYTE    bReserved2;
    DWORD   CoordFrame;
    DWORD   AccelSensitivity;
    float   fReserved1;
    float   fReserved2;
    float   TipOffset[3];
    float   fReserved3;
    Bool    GetCameraData;
    Bool    GetAuxInputs;
    Bool    GetCovarianceData;
    Bool    GetExtendedData;
}
ISD_STATION_INFO_TYPE;*

Using this structure I want to call to a function to get the structure
using byref, change the field GetInputs to TRUE and set it again. The call
to the function is not working and the variable after the call returns
setted to FALSE. What I am doing wrong? Is there any compatibility problem
with the structure? Here is the code:

*     config=ISD_STATION_INFO_TYPE()

isenseWrapper.ISD_GetStationConfig(handle,ctypes.byref(config),WAND_STATION,1)
     config.GetInputs = not config.GetInputs

isenseWrapper.ISD_SetStationConfig(handle,ctypes.byref(config),WAND_STATION,1)
*

PS: The first call works and I get the structure correctly filled, is not
empty

Thanks in advantage

Regards

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