Id3dxline problem

hi folks

can anyone tell me what the problem with this code

ID3DXLine *pLine =NULL;

D3DXCreateLine(&Device,&pLine);

D3DXVECTOR3 v[] = { (0.0f,0.0f,0.0f),

{5.0f,0.0f,0.0f)

};

Device->BeginScene();

pLine->Begin();

pLine->DrawTransform(v,2,&pWorldTransform,D3DCOLOR_COLORVALUE(1.0f,1.0f,1.0f)));

pLine->End()

Device->EndScene()

iam not getting displayed any line on the screen;