Binding ObservedObject Init to ContentView

Question

I'm trying to pull more content from server when the user comes to end of the page. I start with loading 5 posts and then 5+5=10 posts. But I cannot bind range so that the view updates with new numbers. Is there a better approach to this or what am I doing wrong here? I tried many things from similiar questions but here is the code:

struct ContentView: View {
@ObservedObject var feedPosts : PostArrayObject
@State var rangeEnd: Int

    init(){
        let state = State(initialValue: 1)
        self._rangeEnd = state
        self.feedPosts = PostArrayObject(personalFeed: true, chunkSize: state.projectedValue)
    }

var body: some View {
        TabView {
            NavigationView {
                FeedView(posts: feedPosts, title: "Feed", rangeEnd: $rangeEnd)
                    .toolbar {
....

class PostArrayObject: ObservableObject {
@Published var range: Range<Int> = 0..<1


    init(personalFeed: Bool, chunkSize: Binding<Int>) {
    DataService.instance.downloadPostsForFollowingInChunks(chunkSize: chunkSize.wrappedValue) { (returnedPosts) in
        let shuffledPosts = returnedPosts.shuffled()
        self.dataArray.append(contentsOf: shuffledPosts)
        self.postsLoaded = true
        }
    }


struct FeedView: View {
    @ObservedObject var posts: PostArrayObject
    var title: String
    var chunkSize: Int = 5
    @Binding var rangeEnd: Int
    ....

    func loadMore(){
        rangeEnd = chunkSize
        posts.range = 0..<posts.range.upperBound + rangeEnd
        
    }
}