Problem with animation slots

when i change the slot in the animation montage from the default slot to another new slot that i created the animation wont work anymore it only works with the default slot and idk why so i need help

Hi
could you provide some images?

here you go

We are having the same issue, but with pre-existing slots that work on other animations. We decided to changed the melee attack animation to use the upperbody slot rather than the fullbody slot. The animation stopped playing in the animation editor and also came out null when attempting to play, despite working perfectly before.

We found a bit of a work around for this bug. Simply change to your custom slot, save the asset, then open a different animation, and then reopen the first animation. It was then playing the animation in the editor. It is still, however not playing the animation in the game, which is odd.

I found a similar bug in 4,25 when changing slots in an Animation Montage. If your character T-poses then you need to re-select the ‘Preview Slot’ menu-checkbox (Click the drop-down menu next to the slot name). Alternatively close the montage window and re-open.