Adds config to enable heigh setting of end-frames.

src/main/java/world/bentobox/skygrid/Settings.java

@@ -147,6 +147,11 @@ public class Settings implements WorldSettings {
     @ConfigEntry(path = "world.skygrid-height")
     private int islandHeight = 128;
 
+    @ConfigComment("End Frame height")
+    @ConfigComment("This is the height where end frames will generate.")
+    @ConfigEntry(path = "world.end-frame-height", since = "1.20.0")
+    private int endFrameHeight = 3;
+
     @ConfigComment("Space around new players in blocks (will be rounded up to nearest 16 blocks)")
     @ConfigEntry(path = "world.space-around-players")
     private int islandDistance = 1000;
@@ -1623,4 +1628,18 @@ public boolean isCheckForBlocks()
     public void setMaxHomes(int maxHomes) {
         this.maxHomes = maxHomes;
     }
+
+    /**
+     * @return the endFrameHeight
+     */
+    public int getEndFrameHeight() {
+        return endFrameHeight;
+    }
+
+    /**
+     * @param endFrameHeight the endFrameHeight to set
+     */
+    public void setEndFrameHeight(int endFrameHeight) {
+        this.endFrameHeight = endFrameHeight;
+    }
 }

src/main/java/world/bentobox/skygrid/generators/SkyGridPop.java

@@ -119,7 +119,7 @@ private void makeEndPortal() {
                 if (xx == zz || (xx==1 && zz==5) || (xx==5 && zz==1) || (xx>1 && xx<5 && zz>1 && zz<5)) {
                     continue;
                 }
-                setFrame(xx, zz, chunk.getBlock(xx, 0, zz));
+                setFrame(xx, zz, chunk.getBlock(xx, addon.getSettings().getEndFrameHeight(), zz));
             }
         }
     }