Plugins Abstract Menus | An advanced GUI plugin 1.17.5-beta

Update to 1.21.4
https://github.com/AbstractMenus/minecraft-plugin/releases/tag/v1.17.5-beta

Folia support added. This is a beta version, so there may be problems on servers with Folia. Please report problems so we can fix them quickly.

Changes:
1) Added support for placeholders in Iterator catalogue
2) Added material-only check for heldItem rule (by special condition)
3) Fixed miniMessage sending on 1.21
4) Fixed refreshMenu for generated menu by matrix (refreshes the number of items)

now you can check only material by heldItem:
heldItem: {material: DIAMOND_SWORD}
And you can make this checker for item:

Code:

{
  slot: 1
  material: "STONE"
  click {
    rules {
      or: [
        {heldItem: {material:...

Added support for Spigot and Paper 1.20.6 and 1.21.

Rewritten skin actions to support new SkinsRestorer API (15.0+)

• Fixed SkinsRestorer hook
• Fixed variable synchronizing issue
• Fixed maven dependency example in the docs