Invisible ArmorStand and Pose

I try create throw knife...
I use example by here: https://forums.pmmp.io/threads/is-there-away-to-make-throwing-sword.5797/#post-51683

But have some question:
1. Sword invisble too, If I set invisible true for Armor Stand
2. How I can set pose for Armor Stand? Where I need paste:

PHP:

$sword->getDataPropertyManager()->setByte(Entity::DATA_ARMOR_STAND_POSE_INDEX, 8);