Post Processing Script to add sound to Gcode

[SEEKMSMSMSM 0]

I am trying to write a python script to play subsequent beeps at the end of a print so i can hear when it's done. I have already got it to show up in Cura (a feat on its own), and now I'm trying to make the script run like I want it to. Here is the script:

 

# SEEKMSMSMSM
# Script to play beeps

from typing import List, Dict
from ..Script import Script
import re

class Soundy(Script):
    version = "1.0.0"

    def getSettingDataString(self):
        return """{
            "name": "Soundy",
            "key": "Soundy",
            "metadata": {},
            "version": 2,
            "settings":
            {
                "startFreq":
                {
                    "label": "Start Frequency",
                    "description": "The starting value of the sound.",
                    "type": "int",
                    "default_value": 300
                },
                "endFreq":
                {
                    "label": "End Frequency",
                    "description": "The ending value of the sound.",
                    "type": "int",
                    "default_value": 800
                },
                "individualDuration":
                {
                    "label": "Individual Sample Duration",
                    "description": "How long should each frequency between the range play?",
                    "type": "int",
                    "default_value": 1,
                    "minimum_value": 0.2,
                    "maximum_value": 20,
                    "maximum_value_warning": 15
                }                
            }
        }"""

    def __init__(self):
        super().__init__()

    def execute(self, data):

        StartFreq = self.getSettingValueByKey("startFreq")
        EndFreq = self.getSettingValueByKey("endFreq")
        ID = self.getSettingValueByKey("individualDuration")
        sound = range(StartFreq,EndFreq)
        Command = "M300"
        for n in sound:
            SoundCode = str(Command," P",ID," S",n,sep='')
            
        for layer in data:
            index = data.index(layer)
            layer = layer + "\n" + SoundCode
            data[index] = layer
            return data
            break
                        
        return data
        
The script shows up, shows the values I can edit, then when I check the Gcode, there's non of the commands I want (M300 P1 S500, for example)

[nallath 1,125]

        for layer in data:
            index = data.index(layer)
            layer = layer + "\n" + SoundCode
            data[index] = layer
            return data
            break

This code will only run once.

The return data will make sure that the rest of the code of the function is never called. You should remove the return data (and the break) inside of the for statement.