can you use the recipe variable {iot:thingName} in the merge update for the shadow manager?

The documentation is a bit confusing:

Merge Configuration Update says you can use the the {iot:thingName} variable.

I have tried using it in the merge update for the Shadow Manager.

{
	"strategy": {
		"type": "realTime",
		"delay": 300
	},
	"synchronize": {
		"shadowDocumentsMap": {
			"{iot:thingName}": {
				"classic": true,
				"namedShadows": [
					"test-plugin",
					"notifications-plugin"
				]
			}
		},
		"direction": "betweenDeviceAndCloud"
	},
	"rateLimits": {
		"maxOutboundSyncUpdatesPerSecond": 100,
		"maxTotalLocalRequestsRate": 200,
		"maxLocalRequestsPerSecondPerThing": 20
	},
	"shadowDocumentSizeLimitBytes": 8192
}

When I deploy it I get an error:

2023-08-11T05:29:42.430Z [WARN] (Serialized listener processor) com.aws.greengrass.shadowmanager.ShadowManager: service-invalid-state-error. Invalid reported state. {serviceName=aws.greengrass.ShadowManager, currentState=ERRORED, newState=ERRORED}
2023-08-11T05:29:42.435Z [ERROR] (Serialized listener processor) com.aws.greengrass.shadowmanager.ShadowManager: service-errored. {serviceName=aws.greengrass.ShadowManager, currentState=ERRORED}
com.aws.greengrass.shadowmanager.exception.InvalidRequestParametersException: ThingName must match pattern [a-zA-Z0-9:_-]+
        at com.aws.greengrass.shadowmanager.util.Validator.validateThingName(Validator.java:86)
        at com.aws.greengrass.shadowmanager.model.configuration.ShadowSyncConfiguration.processThingShadowSyncConfiguration(ShadowSyncConfiguration.java:225)
        at com.aws.greengrass.shadowmanager.model.configuration.ShadowSyncConfiguration.processThingConfiguration(ShadowSyncConfiguration.java:165)
        at com.aws.greengrass.shadowmanager.model.configuration.ShadowSyncConfiguration.lambda$processOtherThingConfigurations$0(ShadowSyncConfiguration.java:107)
        at java.base/java.util.TreeMap.forEach(TreeMap.java:1002)
        at com.aws.greengrass.shadowmanager.model.configuration.ShadowSyncConfiguration.lambda$processOtherThingConfigurations$1(ShadowSyncConfiguration.java:106)
        at java.base/java.util.Map.computeIfPresent(Map.java:1079)
        at com.aws.greengrass.shadowmanager.model.configuration.ShadowSyncConfiguration.processOtherThingConfigurations(ShadowSyncConfiguration.java:102)
        at com.aws.greengrass.shadowmanager.model.configuration.ShadowSyncConfiguration.processConfiguration(ShadowSyncConfiguration.java:79)
        at com.aws.greengrass.shadowmanager.ShadowManager.configureSynchronization(ShadowManager.java:298)
        at com.aws.greengrass.shadowmanager.ShadowManager.lambda$install$5(ShadowManager.java:251)
        at com.aws.greengrass.config.Topics.childChanged(Topics.java:439)
        at com.aws.greengrass.config.Topics.childChanged(Topics.java:461)
        at com.aws.greengrass.config.Topics.childChanged(Topics.java:461)
        at com.aws.greengrass.config.Topics.childChanged(Topics.java:461)
        at com.aws.greengrass.config.Topic.fire(Topic.java:283)
        at com.aws.greengrass.config.Topic.lambda$withNewerValue$0(Topic.java:255)
        at com.aws.greengrass.dependency.Context$1.run(Context.java:68)

2023-08-11T05:29:42.436Z [WARN] (Serialized listener processor) com.aws.greengrass.shadowmanager.ShadowManager: service-invalid-state-error. Invalid reported state. {serviceName=aws.greengrass.ShadowManager, currentState=ERRORED, newState=ERRORED}

Basically I want to complete a deployment on all my core Devices (100+) and it should just sync the shadows that are associated with that core device and not the others.... Is this possible or do we need to explicitly list the thingName?