I'm trying to change the values of the list in the message box from Unity. Based on the documentation we can do that using the SendMesage() method.

public void SendMessage(string destination, string symbol, params object[] args)

where the destination is the receiver box, and args is supposed to be the array of values. I don't know what will be used as a "symbol" in the message box.

The method is triggering the message box but can't change values.

Can anyone please tell me how to change values in the message box from unity, or what will be used as a "symbol" in SendMessage() method?

In the documentation, the symbol is defined as "The message keyword".

I've attached a PD patch below for reference.

@Kiara What is your actual code in Unity...... have you replaced "destination" with "unity_message"...?
"symbol" might just be a header...... try something like "myarray".
Its purpose could be to differentiate from other messages sent such as "myfader1"
You say that you do receive something in Pd...... something arrives at the outlet of [r unity_message]...?

Attach a [print] to [r unity_message] and screenshot the print in the Pd console and upload it.
A more useful [print] is [rawprint] which is in the zexy library.... that gives more information.

David.

I can't see the PD patch while the game's running.

Here's is the code I'm using:

public LibPdInstance pdPatch;
public float[] list = {880, 440, 440 };

void OnTriggerEnter(Collider other)
{
    if (other.CompareTag("Player"))
    {

        pdPatch.SendMessage("loadbang", "list", list);
        pdPatch.SendBang("unity_bang");                        

    }
}

I'm using loadbang as a destination, and testing using values {220, 220, 440} , {880, 440, 440} and {220, 440, 880}

@Kiara Your list from Unity will not pass from [r loadbang] as you have a fixed message [220 220 440( in the Pd patch. But it should trigger that fixed message if the list actually arrives at [r loadbang].
So it seems likely that nothing arrives.

I suggest you try (as you cannot see the patch or the Pd console) debugging using the libPd "Pipe Print to Console" feature......... https://github.com/LibPdIntegration/LibPdIntegration.
With [print] objects in your Pd patch, connected to the [receive] objects, you can then see in the Unity console any messages arriving in the patch.
David.

I added print to received objects but nothing prints out. I tried sending values to an empty message box, but nothing happened. I can only trigger the message box but can't send any data to it. I'm guessing the symbol parameter has something to do with it.