how to create bytebuffer

[350030173]

// Namespace: LuaInterface
public class LuaDLL // TypeDefIndex: 5749
public static int luaL_loadbuffer(IntPtr luaState, byte[] buff, int size, string name); // 0x127E5DC

In the above function, I want to replace the second argument

my code is :

var SystemByte = Il2Cpp.Image.corlib.class("System.Byte");
var buff= Il2Cpp.Array.from(SystemByte, [0x2d, 0x2d, 0x5b, 0x5b, 0x0a, 0x3d, 0x3d, 0x3d, 0x3d, 0x3d, 0x3d, 0x3d]);

The game will pause and flash back，
If the second parameters are OK, is there something wrong with my code, and if so, how do I create the second argument

[350030173]

I do it like this，It work

var moduleBaseAddress = Module.getBaseAddress("libil2cpp.so");
var nativePointer = moduleBaseAddress.add(0x127E5DC);
console.log("==nativePointer",nativePointer);
Interceptor.attach(nativePointer,
{
	onEnter: function (args)
	{
		var size = args[2].add(0xc).toInt32();
		var name = args[3].add(0xc).readUtf16String();
		console.log("fileSize: " + size);
		console.log("fileName: " + name);
		if(name.indexOf("PlayerDataManager")>=0)
		{
                                              var mybuff = [45,45,91,91,10,61,61,61,61,61,61,61];
				Memory.writeByteArray(args[1].add(0x10),mybuff);
		}

	},
	onLeave: function (retval)
	{

	}
}
);

[vfsfitvnm]

You are doing a different thing here. In the previous snippet you are creating a brand new byte array (which has a different memory address), but in this one you are just writing values in it.

[350030173]

Thank you for your reply. Maybe what I described is wrong, but I just want to replace the value of the second parameter