Irrlicht Engine

The omni light is simple and works but the directional light?
I have a tutorial with code in C++ but I don't succeed to trasform
in C# 2005

with reference:
video::SLight& ldata;
ldata = light->getLightData();
ldata.Type = ELT_DIRECTIONAL;
ldata.Position = core::vector3df(0,-1,0);


or ...

The omni light is simple and works but the directional light?
I have a tutorial with code in C++ but I don't succeed to trasform
in C# 2005

with reference:
video::SLight& ldata;
ldata = light->getLightData();
ldata.Type = ELT_DIRECTIONAL;
ldata.Position = core::vector3df(0,-1,0);

or


video ...

thanks Luben your idea is correct but I have found where I wrong.

I write my solution\error for the one that uses the Panda Exporter.

Under the voice "X file Settings" there is "DXFRame" with 3 options;
1 "no frame"
2 "top frame only"
3 "sub frame hierarchy."
I had selected on 3 while It must be ...

I have now tried to put it away from the center of the aces and continuous to rotate inside center of the object.

Perhaps it's a parameter of Panda, perhaps before making an export it brings the object on the origin of the Cartesian aces


ps. You excuse mine terrible English

I have built an object with 3dsMax.
I have moved the rotation center (pivot) near to an extreme.
I export with Panda in file.x
When I load the mesh with IRR the object rotates in comparison to the center of the object and not from me assigned.

Why?