Parse query using pointers

Question

For simplicity sake, I have two classes Location and Program. Location has objectId and name, while Program has objectId, name and location (which is a pointer to Location ObjectId). When a user selects a location, how do I return the associated programs in a query? The following code doesn't work right now.

let pointer = PFObject(withoutDataWithClassName: "location", objectId: passedLocationID!) //passedLocationID is a string containing the ObjectId from the selected location    

let query = PFQuery(className:"Program")
query.whereKey("location", equalTo: pointer.objectId!)
query.findObjectsInBackgroundWithBlock {
    (objects: [PFObject]?, error: NSError?) -> Void in
    if error == nil {
        if let objects = objects {
            for object in objects {
                self.programName.append(object["name"] as! String)
                self.programID.append(object.objectId! as String)
            }
        }
    } else {
}

This query prints the following error to the console "pointer field location needs a pointer value"

What would the correct code be to return the associated programs?

EDIT

I have found a solution, but it seems like overkill. Two queries to Parse, I feel like this should be accomplished using only 1 query.

let firstQuery = PFQuery(className: "Location")
firstQuery.whereKey("objectId", equalTo: passedLocationID!)
    
let secondQuery = PFQuery(className: "Program")
secondQuery.includeKey("location")
secondQuery.whereKey("location", matchesQuery: firstQuery)
secondQuery.findObjects.......

Answer 1

So I found an answer.

When I pass the location to the program view controller, I need to pass it as a PFObject.

var passedLocationID: PFObject?

And then just a simple query works.

let newQuery = PFQuery(className: "Program")
newQuery.whereKey("location", equalTo: passedLocationID!)