ncdf2vdfcreate

I met a problem in using ncdf2vdfcreate I ll appreciate if u can help me about that and here is my question I set a var "v" in netcdf file for test "v01.nc" it contains Variable: v Type: double Total Size: 2048 bytes 256 values Number of Dimensions: 3 Dimensions and sizes: [8] x [8] x [4] Coordinates: Number Of Attributes: 1 _FillValue : -999 and i use "ncdf2vdfcreate" command to create the vdf file "ncdfvdfcreate -vars v D:\v01.nc D:\v01.vdf" and i got the massage Created VDF file: Num time steps : 1 3D Variable names : v 2DXY Variable names : 2DXZ Variable names : 2DYZ Variable names : Excluded 3D Variable names : Excluded 2D Variable names : Coordinate extents : 0 0 0 0.5 1 1 then i open the vapor tick "data"->"load a dataset in current session" but i got the error warning " no data found in vdc" hope u can give me some advice thx~