Schedule soap action: "Cannot set property '$' of undefined"

[avishayg]

Hi,
I'm using this package and tackled some bug with scheduling an Email Send Definition:
https://developer.salesforce.com/docs/atlas.en-us.noversion.mc-apis.meta/mc-apis/scheduling_an_email_send_definition.htm

I'm trying to run this code to preform the action:

schedule() {
   ...

    const scheduleOpts = {
        Recurrence: {
            DailyRecurrencePatternType: 'Interval',
            DayInterval: 1,
        },
        RecurrenceType: 'Daily',
        RecurrenceRangeType: 'EndAfter',
        StartDateTime: '2021-02-28T22:00:00+02:00',
    }
    const interactions = { CustomerKey: ${EMAIL_DEFINITION_KEY} };

    return new Promise((resolve, reject) => {
        this.soapClient.schedule('EmailSendDefinition', scheduleOpts, interactions, 'start', null, (err, response) => {
            if (err) reject(err);
            else resolve(response.body);
        });
    });
}

But I get this error:

TypeError: Cannot set property '$' of undefined
    at FuelSoap.schedule (node_modules/fuel-soap/lib/fuel-soap.js:663:54)
    ....

Looking at the code I can see that there is an assignment to undefined property (in lib/fuel-soap.js line 663)

if(Array.isArray(body.ScheduleRequestMsg.Interactions)){
	for(let i = 0; i < body.ScheduleRequestMsg.Interactions.length; i++){
		body.ScheduleRequestMsg.Interactions[0].Interaction.$ = {'xsi:type': type};
	 }
} else if (typeof body.ScheduleRequestMsg.Interactions === "object") {
	body.ScheduleRequestMsg.Interactions.Interaction.$ = {'xsi:type': type};
} else {
	throw new TypeError('Interactions must be of Array or Object Type');
}

You can't assume that body.ScheduleRequestMsg.Interactions.Interaction.$ is set since you get it from outside.

Not sure this is a bug or I missed something in the docs (also didn't find much relevant docs on how to use the schedule action).
My version is 2.2.4

Thanks
Avishay

[avishayg]

Found the mistake, closing the issue