Update signed distance fields collisions

[ZAMA30]

After I change float densitys of a NvFlexBuffer :

std::memcpy( g_buffers->colliders.mappedPtr, g_Updates.sdfdatas[0]->colldata, sizeof(float)* dimdimdim);

NvFlexUpdateDistanceField(g_flexLib, g_Updates.sdfdatas[0]->sdf[0], dim, dim, dim, g_buffers->colliders.buffer);

Also i call NvSetShapes()...

...But the collision shape is not updated, it collides as the first shape.

Is there any way to update this data ??

Thank you