GMSH from Python not creating a type 5 mesh (hexahedron)

mesh
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Hi Guys

This may be a bit of a noob question. It is my first time working with solid meshes on GMSH.

Below is my code to mesh a .stp file which just contains a simple cube. The mesh does not contain any type 5 (hexahedron) elements. Hoe do I force GMSH to only give hexahedron elements?

def create_msh():
    # Initialize Gmsh
    gmsh.initialize()
    # Create a new model
    gmsh.model.add("hex_mesh_model")

    # Import the STEP file
    gmsh.model.occ.importShapes(File_Location_STP)
    gmsh.model.occ.synchronize()


    gmsh.option.setNumber('Mesh.MeshSizeMin', 100)
    gmsh.option.setNumber('Mesh.MeshSizeMax', 200)

    gmsh.model.mesh.recombine()
    gmsh.option.setNumber("Mesh.Algorithm3D", 1)  
    gmsh.option.setNumber("Mesh.RecombineAll", 1)
    gmsh.option.setNumber("Mesh.SubdivisionAlgorithm", 2)
    gmsh.option.setNumber("Mesh.ElementOrder",1)
    gmsh.option.setNumber('Mesh.Recombine3DLevel', 1) 
    gmsh.option.setNumber("Mesh.RecombinationAlgorithm", 1) 
    gmsh.option.setNumber("Mesh.SubdivisionAlgorithm", 1)  
    gmsh.model.mesh.refine()
    gmsh.model.mesh.generate(3)

    gmsh.option.setNumber("Mesh.MshFileVersion",2.2) 
    gmsh.write(File_Location)
    gmsh.finalize()
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This question is about gmsh, and must be asked at Issues · gmsh / gmsh · GitLab