HUDs, GUIs...

To see how to use HUDs and GUIs API (Font Images) you can check my examples.

GUIs

GitHub - LoneDev6/API-ItemsAdder-Example-GUI: Example usage of ItemsAdder API to crete custom textured inventories in SpigotGitHub

Huds

GitHub - LoneDev6/RPGhuds: Customized HUDs for ItemsAdderGitHub

GitHub - LoneDev6/API-ItemsAdder-Example-ServerMonitor: Example usage of ItemsAdder API to create custom HUDs in SpigotGitHub

Access mana bar value example

PlayerHudsHolderWrapper huds = new PlayerHudsHolderWrapper(player);
PlayerQuantityHudWrapper manaHud = 
                new PlayerQuantityHudWrapper(huds, "magiccraft:mana_bar");
if(manaHud.exists())
  manaHud.setFloatValue(2.0f);
else
  System.out.println("Error: mana not found, maybe it's disabled.");

FAQ

Common errors

Get Emoji or GUI character

new FontImageWrapper("twitteremojis:confirm").getString()