i have a problem with my code for error." Error using zeros Size inputs must be integers. "

Error using zeros
Size inputs must be integers.

Error in ConvertVoxelList2Voxel3D (line 11)
voxel3D = zeros([voxels_number(2) voxels_number(1) voxels_number(3)]);

Error in Vis (line 59)
[voxel3D] = ConvertVoxelList2Voxel3D(voxels_number, voxel_size, voxels_voted);

[Walter Roberson]

What are you passing as your first parameter to the function?