SetStreamSource hook error

dunno what im doing wrong,, got dip function to work,, can anyone help? im trying to follow a tutorial on chams w/o d3dstarterkit


int TheHook(void)
{
DWORD hD3D, adr, *vtbl;
hD3D=0;
do {
hD3D = (DWORD)GetModuleHandle("d3d9.dll");
Sleep(10);
} while(!hD3D);
adr = FindPattern(hD3D, 0x128000, (PBYTE)"\xC7\x06\x00\x00\x00\x00\x89\x86\x00\x00\x 00\x00\x89\x86", "xx????xx????xx");
if (adr)
{
memcpy(&vtbl,(void *)(adr+2),4);
pReset = (oReset) DetourFunction((PBYTE)vtbl[16] , (PBYTE)Reset ,5);
pEndScene = (oEndScene) DetourFunction((PBYTE)vtbl[42], (PBYTE)EndScene,5);
pDIP = (oDIP) DetourFunction((PBYTE)vtbl[82], (PBYTE)myDIP,5);
//pSetStreamSource = (oSetStreamSource) DetourFunction((PBYTE)vtbl[100], (PBYTE)SetStreamSource,5);
}
return 0;
}

// the function

/*
HRESULT WINAPI SetStreamSource(UINT StreamNumber,IDirect3DVertexBuffer9* pStreamData,UINT OffsetInBytes,UINT Stride)
{

if( StreamNumber == 0 ){m_Stride = Stride;}
return m_pD3Ddev->SetStreamSource(StreamNumber, pStreamData,OffsetInBytes, Stride);
}
*/

//globals
//oSetStreamSource pSetStreamSource;

// base.h
/pedef HRESULT (WINAPI* oSetStreamSource)(LPDIRECT3DDEVICE9 pDevice,UINT StreamNumber,IDirect3DVertexBuffer9* pStreamData,UINT OffsetInBytes,UINT Stride);