Solved Double plant blocks

I've been trying for hours to spawn a double flower for version 1.12, I read the documentation and other solutions but without success, for now the plugin is able to spawn a double plant but it's glitched (attached photo). I'm on 1.12.2

Image (open) Image (close)

Here's my code

Code:

Block top = ...;
Block bottom = ...;
bottom.setType(XMaterial.ROSE_BUSH.parseItem().getType(), false); //Material.ROSE_BUSH
MaterialData mdbottom = bottom.getState().getData();
mdbottom.setData((byte) 4);
top.setType(XMaterial.ROSE_BUSH.parseItem().getType(), false); //Material.ROSE_BUSH
MaterialData mdtop = top.getState().getData();
mdtop.setData((byte) 10);

Edit: solved with this code

Code:

bottom.setType(Material.DOUBLE_PLANT);
bottom.setData((byte) 4);
top.setType(Material.DOUBLE_PLANT);
top.setData((byte) 10);