Create Resource Group, Storage Account, File Share and Container Instance in one ARM template

Hello,

i´m trying to create an ARM template to create a Resource Group, Storage Account, File Share and Container Instance all in one go.

It´s working apart from the Container Instance (which should mount the previously created file share), and its failing when getting the Storage Account key for this mount.

I´m trying to get the key like this:

"storageAccountKey": "[listKeys(resourceId('Microsoft.Storage/storageAccounts', variables('varStorageAccountName')), '2019-04-01').keys[0].value]"

but it gives me the error message:

The Resource 'Microsoft.Storage/storageAccounts/igen5neo4jstorage' under resource group '<null>' was not found."

I´m starting the deployment with 

az deployment create --location westeurope --template-file complete_arm_file.json

Is there somehing i am simply missing (evtl. just the correct way to refrence the Storage Account in the subscription-scoped deployment ), or doesn´t it work as i intend to do? Here is the complete template i have till now:

{"$schema": "https://schema.management.azure.com/schemas/2018-05-01/subscriptionDeploymentTemplate.json#","contentVersion": "1.0.0.0","parameters": {"paramLocation": {"defaultValue": "westeurope","type": "String"
        },"paramEnvironment": {"defaultValue": "igen5","type": "String"
        },"paramTargetName":{"defaultValue": "neo4j","type":"string"
        },"paramDockerImage":{"defaultValue": "bitnami/neo4j:4.0.1","type":"string"
        }
    },"variables": {"varResourceGroupName": "[concat(parameters('paramEnvironment'), parameters('paramTargetName'),'rg')]","varContainerGroupName": "[concat(parameters('paramEnvironment'), parameters('paramTargetName'),'aci')]","varStorageAccountName": "[concat(parameters('paramEnvironment'), parameters('paramTargetName'),'storage')]","varFileShareName": "[concat(parameters('paramEnvironment'), parameters('paramTargetName'),'acibitnami')]"
    },"resources": [
         {"type": "Microsoft.Resources/resourceGroups","apiVersion": "2018-05-01","location": "[parameters('paramLocation')]","name": "[variables('varResourceGroupName')]","properties": {}
        },
        {"type": "Microsoft.Resources/deployments","apiVersion": "2018-05-01","name": "storageDeployment","resourceGroup": "[variables('varResourceGroupName')]","dependsOn": ["[resourceId('Microsoft.Resources/resourceGroups/', variables('varResourceGroupName'))]"
            ],"properties": {"mode": "Incremental","template": {"$schema": "https://schema.management.azure.com/schemas/2015-01-01/deploymentTemplate.json#","contentVersion": "1.0.0.0","parameters": {},"variables": {},"resources": [
                        {"type": "Microsoft.Storage/storageAccounts","apiVersion": "2017-10-01","name": "[variables('varStorageAccountName')]","location": "[parameters('paramLocation')]","sku": {"name": "Standard_LRS"
                            },"kind": "StorageV2"
                        },
                        {"type": "Microsoft.Storage/storageAccounts/fileServices/shares","apiVersion": "2019-04-01","name": "[concat(variables('varStorageAccountName'), '/default/', variables('varFileShareName'))]","dependsOn": ["[resourceId('Microsoft.Storage/storageAccounts', variables('varStorageAccountName'))]"
                            ]
                        },
                        {"type": "Microsoft.Resources/deployments","apiVersion": "2018-05-01","name": "aciDeployment","resourceGroup": "[variables('varResourceGroupName')]","dependsOn": ["[resourceId('Microsoft.Storage/storageAccounts', variables('varStorageAccountName'))]"
                            ],"properties": {"mode": "Incremental","template": {"$schema": "https://schema.management.azure.com/schemas/2015-01-01/deploymentTemplate.json#","contentVersion": "1.0.0.0","parameters": {},"variables": {},"resources": [
                                        {"type": "Microsoft.ContainerInstance/containerGroups","apiVersion": "2018-10-01","name": "[variables('varContainerGroupName')]","location": "[parameters('paramLocation')]","properties": {"containers": [
                                                    {"name": "[variables('varContainerGroupName')]","properties": {"image": "[parameters('paramDockerImage')]","ports": [
                                                                {"protocol": "TCP","port": 80
                                                                },
                                                                {"protocol": "TCP","port": 7687
                                                                },
                                                                {"protocol": "TCP","port": 7474
                                                                },
                                                                {"protocol": "TCP","port": 7473
                                                                }
                                                            ],"environmentVariables": [],"resources": {"requests": {"memoryInGB": 1.5,"cpu": 1
                                                                }
                                                            },"volumeMounts": [
                                                                {"name": "bitnamipersistvolume","mountPath": "/bitnami"
                                                                }
                                                            ]
                                                        }
                                                    }
                                                ],"restartPolicy": "OnFailure","ipAddress": {"ports": [
                                                        {"protocol": "TCP","port": 80
                                                        },
                                                        {"protocol": "TCP","port": 7687
                                                        },
                                                        {"protocol": "TCP","port": 7474
                                                        },
                                                        {"protocol": "TCP","port": 7473
                                                        }
                                                    ],"type": "Public","dnsNameLabel": "[variables('varContainerGroupName')]"
                                                },"osType": "Linux","volumes": [
                                                    {"name": "bitnamipersistvolume","azureFile": {"shareName": "[variables('varFileShareName')]","storageAccountName": "[variables('varStorageAccountName')]","storageAccountKey": "[listKeys(resourceId('Microsoft.Storage/storageAccounts', variables('varStorageAccountName')), '2019-04-01').keys[0].value]"																										   
                                                        }
                                                    }
                                                ]
                                            }
                                        }
                                    ],"outputs": {}
                                }
                            }
                        }
                    ],"outputs": {}
                }
            }
        }
    ],"outputs": {}
}

I´ve also tried to put the ACI-Part not as another nested deployment but just as another resource in the inner deloyment. with the same result.

Thank you!