Filter Repeater using dropdown dataset wont work

Hello i want to filter my repeater ,
so it’s like this
in my dropdownoffer has 2 data = Rooms and Restaurant

and inside my repeater dataset i also has more data

also this is my code, i watch codequeen tutorial about dropdown filter,
i try to make the same with a bit of changes from dropdown with dropdown to dropdown with repeater, and i found some error in my code red color it said “value does not exist on #repeateroffer
do you have any idea?

import wixData from 'wix-data';

$w.onReady(function () {
});
export function dropdownoffer_change(event) {
repeaterboxfilter()();
//Add your code for this event here:
}
function repeaterboxfilter (){
$w("#dataset1").setFilter( wixData.filter()
.eq("fieldkey", $w("#repeateroffer").value)
);
}

Have a watch of this YouTube video as it should help you.
https://www.youtube.com/watch?v=r0DLqkRDJ34

Have a read here of this Wix page.
https://support.wix.com/en/article/corvid-tutorial-adding-collection-data-search-functionality#filter-using-a-dropdown-element

Otherwise, please use the search function for this forum and you will find many previous posts.
https://www.wix.com/corvid/forum/community-discussion/repeater-drop-down-filter
https://www.wix.com/corvid/forum/community-discussion/filtering-repeater-with-a-dropdown
https://www.wix.com/corvid/forum/community-discussion/create-dropdown-filter-from-repeater
https://www.wix.com/corvid/forum/community-discussion/filtering-repeater