custom effect can't modify converted expressions via raw expression

[Maple-YZ]

Describe the bug
when change value of a ConvertedExpression instance on custom effect, the trigger stops and generates an error like this:

[18:12:26 ERROR]: #!#! 
[18:12:26 ERROR]: #!#! [Skript] Severe Error:
[18:12:26 ERROR]: #!#! 
[18:12:26 ERROR]: #!#! Something went horribly wrong with Skript.
[18:12:26 ERROR]: #!#! This issue is NOT your fault! You probably can't fix it yourself, either.
[18:12:26 ERROR]: #!#! It looks like you are using some plugin(s) that alter how Skript works (addons).
[18:12:26 ERROR]: #!#! Here is full list of them:
[18:12:26 ERROR]: #!#! skript-placeholders v1.7.0 (https://github.com/APickledWalrus/skript-placeholders) skript-reflect v2.5.1 (https://github.com/SkriptLang/skript-reflect) skript-gui v1.3 (https://github.com/APickledWalrus/skript-gui) SKeb v0.1.2 SkJson v4.0.1 SkBee v3.6.1 (https://github.com/ShaneBeee/SkBee) skUtilities v0.9.2 (https://tim740.github.io/) 
[18:12:26 ERROR]: #!#! We could not identify which of those are specially related, so this might also be Skript issue.
[18:12:26 ERROR]: #!#! You should try disabling those plugins one by one, trying to find which one causes it.
[18:12:26 ERROR]: #!#! If the error doesn't disappear even after disabling all listed plugins, it is probably Skript issue.
[18:12:26 ERROR]: #!#! In that case, you will be given instruction on how should you report it.
[18:12:26 ERROR]: #!#! On the other hand, if the error disappears when disabling some plugin, report it to author of that plugin.
[18:12:26 ERROR]: #!#! Only if the author tells you to do so, report it to Skript's issue tracker.
[18:12:26 ERROR]: #!#! 
[18:12:26 ERROR]: #!#! Stack trace:
[18:12:26 ERROR]: #!#! java.lang.UnsupportedOperationException
[18:12:26 ERROR]: #!#!     at Skript-2.9.2.jar//ch.njol.skript.lang.util.SimpleExpression.change(SimpleExpression.java:259)
[18:12:26 ERROR]: #!#!     at Skript-2.9.2.jar//ch.njol.skript.lang.util.ConvertedExpression.change(ConvertedExpression.java:181)
[18:12:26 ERROR]: #!#!     at skript-reflect-2.5.1.jar//com.btk5h.skriptmirror.skript.custom.ExprRawExpression.change(ExprRawExpression.java:60)
[18:12:26 ERROR]: #!#!     at Skript-2.9.2.jar//ch.njol.skript.effects.EffChange.execute(EffChange.java:292)
[18:12:26 ERROR]: #!#!     at Skript-2.9.2.jar//ch.njol.skript.lang.Effect.run(Effect.java:49)
[18:12:26 ERROR]: #!#!     at Skript-2.9.2.jar//ch.njol.skript.lang.TriggerItem.walk(TriggerItem.java:61)
[18:12:26 ERROR]: #!#!     at Skript-2.9.2.jar//ch.njol.skript.lang.TriggerItem.walk(TriggerItem.java:88)
[18:12:26 ERROR]: #!#!     at Skript-2.9.2.jar//ch.njol.skript.lang.Trigger.execute(Trigger.java:52)
[18:12:26 ERROR]: #!#!     at skript-reflect-2.5.1.jar//org.skriptlang.reflect.syntax.effect.elements.CustomEffect.invokeEffect(CustomEffect.java:62)
[18:12:26 ERROR]: #!#!     at skript-reflect-2.5.1.jar//org.skriptlang.reflect.syntax.effect.elements.CustomEffect.walk(CustomEffect.java:37)
[18:12:26 ERROR]: #!#!     at Skript-2.9.2.jar//ch.njol.skript.lang.TriggerItem.walk(TriggerItem.java:88)
[18:12:26 ERROR]: #!#!     at Skript-2.9.2.jar//ch.njol.skript.lang.Trigger.execute(Trigger.java:52)
[18:12:26 ERROR]: #!#!     at Skript-2.9.2.jar//ch.njol.skript.command.ScriptCommand.execute2(ScriptCommand.java:345)
[18:12:26 ERROR]: #!#!     at Skript-2.9.2.jar//ch.njol.skript.command.ScriptCommand.lambda$execute$0(ScriptCommand.java:304)
[18:12:26 ERROR]: #!#!     at Skript-2.9.2.jar//ch.njol.skript.command.ScriptCommand.execute(ScriptCommand.java:315)
[18:12:26 ERROR]: #!#!     at Skript-2.9.2.jar//ch.njol.skript.command.ScriptCommand.onCommand(ScriptCommand.java:250)
[18:12:26 ERROR]: #!#!     at org.bukkit.command.PluginCommand.execute(PluginCommand.java:45)
[18:12:26 ERROR]: #!#!     at io.papermc.paper.command.brigadier.bukkit.BukkitCommandNode$BukkitBrigCommand.run(BukkitCommandNode.java:91)
[18:12:26 ERROR]: #!#!     at com.mojang.brigadier.context.ContextChain.runExecutable(ContextChain.java:73)
[18:12:26 ERROR]: #!#!     at net.minecraft.commands.execution.tasks.ExecuteCommand.execute(ExecuteCommand.java:30)
[18:12:26 ERROR]: #!#!     at net.minecraft.commands.execution.tasks.ExecuteCommand.execute(ExecuteCommand.java:13)
[18:12:26 ERROR]: #!#!     at net.minecraft.commands.execution.UnboundEntryAction.lambda$bind$0(UnboundEntryAction.java:8)
[18:12:26 ERROR]: #!#!     at net.minecraft.commands.execution.CommandQueueEntry.execute(CommandQueueEntry.java:5)
[18:12:26 ERROR]: #!#!     at net.minecraft.commands.execution.ExecutionContext.runCommandQueue(ExecutionContext.java:103)
[18:12:26 ERROR]: #!#!     at net.minecraft.commands.Commands.executeCommandInContext(Commands.java:451)
[18:12:26 ERROR]: #!#!     at net.minecraft.commands.Commands.performCommand(Commands.java:358)
[18:12:26 ERROR]: #!#!     at net.minecraft.commands.Commands.performCommand(Commands.java:345)
[18:12:26 ERROR]: #!#!     at net.minecraft.commands.Commands.performCommand(Commands.java:340)
[18:12:26 ERROR]: #!#!     at net.minecraft.server.network.ServerGamePacketListenerImpl.performUnsignedChatCommand(ServerGamePacketListenerImpl.java:2297)
[18:12:26 ERROR]: #!#!     at net.minecraft.server.network.ServerGamePacketListenerImpl.lambda$handleChatCommand$15(ServerGamePacketListenerImpl.java:2271)
[18:12:26 ERROR]: #!#!     at net.minecraft.server.TickTask.run(TickTask.java:18)
[18:12:26 ERROR]: #!#!     at net.minecraft.util.thread.BlockableEventLoop.doRunTask(BlockableEventLoop.java:151)
[18:12:26 ERROR]: #!#!     at net.minecraft.util.thread.ReentrantBlockableEventLoop.doRunTask(ReentrantBlockableEventLoop.java:24)
[18:12:26 ERROR]: #!#!     at net.minecraft.server.MinecraftServer.doRunTask(MinecraftServer.java:1574)
[18:12:26 ERROR]: #!#!     at net.minecraft.server.MinecraftServer.doRunTask(MinecraftServer.java:201)
[18:12:26 ERROR]: #!#!     at net.minecraft.util.thread.BlockableEventLoop.pollTask(BlockableEventLoop.java:125)
[18:12:26 ERROR]: #!#!     at net.minecraft.server.MinecraftServer.pollTaskInternal(MinecraftServer.java:1551)
[18:12:26 ERROR]: #!#!     at net.minecraft.server.MinecraftServer.pollTask(MinecraftServer.java:1544)
[18:12:26 ERROR]: #!#!     at net.minecraft.util.thread.BlockableEventLoop.managedBlock(BlockableEventLoop.java:135)
[18:12:26 ERROR]: #!#!     at net.minecraft.server.MinecraftServer.managedBlock(MinecraftServer.java:1503)
[18:12:26 ERROR]: #!#!     at net.minecraft.server.MinecraftServer.waitUntilNextTick(MinecraftServer.java:1510)
[18:12:26 ERROR]: #!#!     at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1355)
[18:12:26 ERROR]: #!#!     at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:334)
[18:12:26 ERROR]: #!#!     at java.base/java.lang.Thread.run(Thread.java:1583)
[18:12:26 ERROR]: #!#! 
[18:12:26 ERROR]: #!#! Version Information:
[18:12:26 ERROR]: #!#!   Skript: 2.9.2
[18:12:26 ERROR]: #!#!     Flavor: skriptlang-github
[18:12:26 ERROR]: #!#!     Date: 14:35:57.106583600
[18:12:26 ERROR]: #!#!   Bukkit: 1.21.1-R0.1-SNAPSHOT
[18:12:26 ERROR]: #!#!   Minecraft: 1.21.1
[18:12:26 ERROR]: #!#!   Java: 21 (OpenJDK 64-Bit Server VM 21+35-2513)
[18:12:26 ERROR]: #!#!   OS: Linux amd64 5.15.0-119-generic
[18:12:26 ERROR]: #!#! 
[18:12:26 ERROR]: #!#! Server platform: Paper
[18:12:26 ERROR]: #!#! 
[18:12:26 ERROR]: #!#! Current node: null
[18:12:26 ERROR]: #!#! Current item: set raw expression 1 to {_i} (as java.lang.Object)
[18:12:26 ERROR]: #!#! Current trigger: effect bind %itemstack% to %offlineplayer% (simple event) (utils/bind-lib.sk, line -1)
[18:12:26 ERROR]: #!#! 
[18:12:26 ERROR]: #!#! Thread: Server thread
[18:12:26 ERROR]: #!#! 
[18:12:26 ERROR]: #!#! Language: simplifiedchinese
[18:12:26 ERROR]: #!#! Link parse mode: DISABLED
[18:12:26 ERROR]: #!#! 
[18:12:26 ERROR]: #!#! End of Error.
[18:12:26 ERROR]: #!#!

To reproduce
use the script below to reproduce:

effect bind %item% to %offline player%:
    trigger:
        set {_i} to expr-1
        set name of {_i} to name of expr-2
        set the raw expr-1 to {_i}

command /bindtest <offline player>:
    trigger:
        bind tool of player to arg-1

Expected behavior
Modify the ConvertedExpression normally, like in the origin skript effects.

Screenshots

for details of the error message, please see Describe the bug part

Server information

• skript-reflect: v2.5.1
• Skript: 2.9.2
• Bukkit: purpur-1.21.1-2299
• Minecraft: 1.21.1
• Java: 21 (OpenJDK 64-Bit Server VM 21+35-2513)
• OS: Linux amd64 5.15.0-119-generic

Additional context
If we change a variable instead of a converted expression, the custom effect works well:

[Fusezion]

not unheard of I'd probably wait for a member of the org to respond as it was responded with in under 10 seconds of making this issue

[Maple-YZ]

Temporarily fixed this issue

By adding a piece of codes:

+import:
+    ch.njol.skript.classes.Changer
+    ch.njol.skript.lang.util.ConvertedExpression


effect bind %item% to %offline player%:
    trigger:
        set {_i} to expr-1
        set string tag "bind" of custom nbt of {_i} to name of expr-2 # from SkBee addon
+        if (the raw expr-1) is an instance of ConvertedExpression:
+            (the raw expr-1).acceptChange(Changer.ChangeMode.SET)
        set the raw expr-1 to {_i}


command /bindtest <offline player>:
    permission: jing.op
    trigger:
        bind tool of player to arg-1

The thing is, a converted expression won't use acceptChange method on custom effect section, which won't initialize the returnTypeInfo field, thus the expression can't be changed by using change method.

I know very little of how the script system works, so I don't know how to fix this in a better way and only made this simple fix.

Needs someone knowing the system well to eventually fix this.

[APickledWalrus]

Fixed on 2.6