diff --git a/api/src/main/kotlin/com/mattmx/ktgui/components/button/GuiButton.kt b/api/src/main/kotlin/com/mattmx/ktgui/components/button/GuiButton.kt
index 936d541..683a89d 100644
--- a/api/src/main/kotlin/com/mattmx/ktgui/components/button/GuiButton.kt
+++ b/api/src/main/kotlin/com/mattmx/ktgui/components/button/GuiButton.kt
@@ -28,6 +28,8 @@ open class GuiButton<T : GuiButton<T>>(
         protected set
     var ifTexturePackActive: ((T) -> Unit)? = null
         protected set
+    var postBuild: ((ItemStack) -> Unit)? = null
+        protected set
 
     // todo should remove this once we have no need for it (parent has been declared)
     private var slots: ArrayList<Int>? = null
@@ -122,6 +124,13 @@ open class GuiButton<T : GuiButton<T>>(
         return this as T
     }
 
+    /**
+     * Code runs after the [GuiButton] has built an [ItemStack]
+     */
+    infix fun postBuild(block: ItemStack.() -> Unit) = apply {
+        postBuild = block
+    } as T
+
     infix fun fromItemBuilder(builder: DslIBuilder) : T {
         item = builder.build()
         return this as T
@@ -162,9 +171,9 @@ open class GuiButton<T : GuiButton<T>>(
         if (player?.hasResourcePack() == true && ifTexturePackActive != null) {
             val copy = this.copy(this.parent)
             ifTexturePackActive!!(copy)
-            return copy.item
+            return copy.item.apply { this?.let { postBuild?.invoke(it) } }
         }
-        return getItemStack()?.clone()
+        return getItemStack()?.clone().apply { this?.let { postBuild?.invoke(it) } }
     }
 
     override fun slots(): List<Int> {
diff --git a/api/src/main/kotlin/com/mattmx/ktgui/utils/time.kt b/api/src/main/kotlin/com/mattmx/ktgui/utils/time.kt
new file mode 100644
index 0000000..2154e11
--- /dev/null
+++ b/api/src/main/kotlin/com/mattmx/ktgui/utils/time.kt
@@ -0,0 +1,16 @@
+package com.mattmx.ktgui.utils
+
+val Int.ticks
+    get() = this.toLong()
+
+val Int.seconds
+    get() = ticks * 20L
+
+val Double.seconds
+    get() = (this * 20).toLong()
+
+val Int.minutes
+    get() = seconds * 60L
+
+val Double.minutes
+    get() = (this * 20 * 60).toLong()
\ No newline at end of file
diff --git a/build.gradle.kts b/build.gradle.kts
index 0c74546..dc4eb35 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -18,7 +18,7 @@ subprojects {
     }
     dependencies {
         compileOnly("org.jetbrains.kotlin:kotlin-stdlib:1.7.10")
-        compileOnly("io.papermc.paper:paper-api:1.19.4-R0.1-SNAPSHOT")
+        compileOnly("io.papermc.paper:paper-api:1.20.2-R0.1-SNAPSHOT")
         compileOnly("me.clip:placeholderapi:2.11.1")
     }
 
diff --git a/plugin/src/main/kotlin/com/mattmx/ktgui/KotlinGui.kt b/plugin/src/main/kotlin/com/mattmx/ktgui/KotlinGui.kt
index 703d85b..8b2ace6 100644
--- a/plugin/src/main/kotlin/com/mattmx/ktgui/KotlinGui.kt
+++ b/plugin/src/main/kotlin/com/mattmx/ktgui/KotlinGui.kt
@@ -1,9 +1,16 @@
 package com.mattmx.ktgui
 
 import com.mattmx.ktgui.commands.simpleCommand
+import com.mattmx.ktgui.dsl.event
 import com.mattmx.ktgui.examples.*
 import com.mattmx.ktgui.utils.not
 import org.bukkit.Bukkit
+import org.bukkit.Material
+import org.bukkit.NamespacedKey
+import org.bukkit.block.Block
+import org.bukkit.entity.FallingBlock
+import org.bukkit.event.entity.EntityChangeBlockEvent
+import org.bukkit.persistence.PersistentDataType
 import org.bukkit.plugin.java.JavaPlugin
 import java.util.logging.Logger
 
diff --git a/plugin/src/main/kotlin/com/mattmx/ktgui/examples/GuiHookExample.kt b/plugin/src/main/kotlin/com/mattmx/ktgui/examples/GuiHookExample.kt
index e993ff6..5aa18f4 100644
--- a/plugin/src/main/kotlin/com/mattmx/ktgui/examples/GuiHookExample.kt
+++ b/plugin/src/main/kotlin/com/mattmx/ktgui/examples/GuiHookExample.kt
@@ -12,6 +12,8 @@ import com.mattmx.ktgui.utils.not
 import org.bukkit.Material
 import org.bukkit.entity.Player
 import org.bukkit.event.inventory.ClickType
+import org.bukkit.inventory.meta.PotionMeta
+import org.bukkit.potion.PotionType
 
 class GuiHookExample : Example {
     val gui = gui(!"Title", 3) {
@@ -23,6 +25,19 @@ class GuiHookExample : Example {
                 add(!"&fThis button was added regularly.")
             }
         } slots listOf(11, 13)
+
+        button(Material.LINGERING_POTION) {
+            named(!"&fA potion")
+            lore {
+                add(!"&fThis is a custom potion")
+            }
+            // Will run before the button is made into an itemstack
+            postBuild {
+                editMeta(PotionMeta::class.java) { meta ->
+                    meta.basePotionType = PotionType.STRONG_STRENGTH
+                }
+            }
+        } slot last()
     }
 
     override fun run(player: Player) = gui.open(player)
diff --git a/plugin/src/main/resources/plugin.yml b/plugin/src/main/resources/plugin.yml
index c0e775f..5158156 100644
--- a/plugin/src/main/resources/plugin.yml
+++ b/plugin/src/main/resources/plugin.yml
@@ -1,7 +1,7 @@
 name: KtGUI
 version: '${version}'
 main: com.mattmx.ktgui.KotlinGui
-api-version: 1.20
+api-version: 1.17
 prefix: KtGUI
 authors: [ MattMX ]
 description: Declarative GUI Library for Paper.