# Bug: Duplicating Tile Map Block Links Tile Maps **URL:** \ **Category:** Help\ **Created:** [March 18, 2026, 10:51pm UTC](https://forum.makecode.com/t/bug-duplicating-tile-map-block-links-tile-maps/42750 "2026-03-18T22:51:41Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![jboutel](https://avatars.discourse-cdn.com/v4/letter/j/ecae2f/32.png) [@jboutel](https://forum.makecode.com/u/jboutel)\ **Post date:** [March 18, 2026, 10:51pm UTC](https://forum.makecode.com/t/bug-duplicating-tile-map-block-links-tile-maps/42750/1 "2026-03-18T22:51:41Z")
Expected behavior: when the user duplicates the set tilemap to tilemap block, the duplicate can be independently updated. What is happening: when the user duplicates the set tilemap to tilemap block, the duplicate tilemap updates all other duplicates as it is changed. In the screenshot, I added purple tiles to the Level 2 map. This change also appeared in the Level 1 map. ![image](https://us1.discourse-cdn.com/flex020/uploads/makecode/original/3X/6/9/69fe236a85ca87ebdebe43e964d3e974c086a874.png) ---
**Author:** ![not\_a\_lemon](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.makecode.com/not_a_lemon/32/35289_2.png) [@not\_a\_lemon](https://forum.makecode.com/u/not_a_lemon)\ **Post date:** [March 18, 2026, 11:38pm UTC](https://forum.makecode.com/t/bug-duplicating-tile-map-block-links-tile-maps/42750/2 "2026-03-18T23:38:58Z")
This is because the assets are named, so when you duplicate the block, the asset inside the block stays the same. You can fix this by simply creating a new asset or using a new “set tilemap to” block. ---
**Author:** ![richard](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.makecode.com/richard/32/5417_2.png) [@richard](https://forum.makecode.com/u/richard)\ **Post date:** [March 18, 2026, 11:39pm UTC](https://forum.makecode.com/t/bug-duplicating-tile-map-block-links-tile-maps/42750/3 "2026-03-18T23:39:27Z")
it’s true, named assets are copied by reference rather than by value and tilemaps are always named