CreateLandscapeInfo returns wrong ULandscapeInfo in PIE

Development World Creation
, ,
1

Trying to access the height data of the landscape via CreateLandscapeInfo(); or GetLandscapeInfo(); both of them returned, but the value ComponentSizeQuads and SubsectionSizeQuads is zero，here is the code:

if (IsValid(TopCurve))
    {
        TopCurve->CreateLandscapeInfo();
        TopCurveLandscapeInfo = TopCurve->GetLandscapeInfo();
        HeightmapAccessor = MakeShareable(new FHeightmapAccessor<true>(TopCurveLandscapeInfo));
    }

However, I find that the landscape edit tool can get these info properly.
Any help would be appreciate ！