Power Automate/Logic Apps - Split String to Characters

Logic Apps Template.json

{
    "$schema": "https://schema.management.azure.com/schemas/2015-01-01/deploymentTemplate.json#",
    "contentVersion": "1.0.0.0",
    "parameters": {
        "logicAppName": {
            "type": "String",
            "metadata": {
                "description": "Name of the logic app."
            }
        },
        "logicAppLocation": {
            "defaultValue": "[resourceGroup().location]",
            "allowedValues": [
                "eastasia",
                "southeastasia",
                "centralus",
                "eastus",
                "eastus2",
                "westus",
                "northcentralus",
                "southcentralus",
                "northeurope",
                "westeurope",
                "japanwest",
                "japaneast",
                "brazilsouth",
                "australiaeast",
                "australiasoutheast",
                "southindia",
                "centralindia",
                "westindia",
                "canadacentral",
                "canadaeast",
                "uaecentral",
                "westcentralus",
                "westus2",
                "[resourceGroup().location]"
            ],
            "type": "String",
            "metadata": {
                "description": "Location of the logic app."
            }
        }
    },
    "resources": [
        {
            "type": "Microsoft.Logic/workflows",
            "apiVersion": "2016-06-01",
            "name": "[parameters('logicAppName')]",
            "location": "[parameters('logicAppLocation')]",
            "properties": {
                "state": "Disabled",
                "definition": {
                    "$schema": "https://schema.management.azure.com/providers/Microsoft.Logic/schemas/2016-06-01/workflowdefinition.json#",
                    "contentVersion": "1.0.0.0",
                    "parameters": {
                        "$authentication": {
                            "defaultValue": {},
                            "type": "SecureObject"
                        }
                    },
                    "triggers": {
                        "manual": {
                            "type": "Request",
                            "kind": "Button",
                            "inputs": {
                                "schema": {
                                    "type": "object",
                                    "properties": {
                                        "text": {
                                            "title": "Input",
                                            "type": "string",
                                            "x-ms-dynamically-added": true,
                                            "description": "The input string to split into characters",
                                            "x-ms-content-hint": "TEXT"
                                        }
                                    },
                                    "required": [
                                        "text"
                                    ]
                                }
                            }
                        }
                    },
                    "actions": {
                        "Init_string_to_split": {
                            "runAfter": {},
                            "type": "InitializeVariable",
                            "inputs": {
                                "variables": [
                                    {
                                        "name": "StringToSplit",
                                        "type": "string",
                                        "value": "@triggerBody()['text']"
                                    }
                                ]
                            }
                        },
                        "Select": {
                            "runAfter": {
                                "Init_string_to_split": [
                                    "Succeeded"
                                ]
                            },
                            "type": "Select",
                            "inputs": {
                                "from": "@range(0, length(variables('StringToSplit')))",
                                "select": "@ substring(variables('StringToSplit'), item(), 1)"
                            },
                            "description": "This is the single step to perform the split --- From: range(0, length(variables('StringToSplit'))) --- Map: substring(variables('StringToSplit'), item(), 1)"
                        }
                    }
                },
                "parameters": {},
                "runtimeConfiguration": {
                    "lifetime": {
                        "unit": "Day",
                        "count": 366
                    },
                    "collections": {
                        "maximumItemCount": 100000
                    },
                    "performanceProfile": {
                        "throttles": {
                            "mode": "Low"
                        }
                    },
                    "retryPolicy": {
                        "type": "Exponential",
                        "interval": "PT5M",
                        "count": 2,
                        "minimumInterval": "PT5M",
                        "maximumInterval": "PT1H"
                    }
                }
            }
        }
    ]
}

Power Automate Package.zip