I am trying to blend my animation but it is not working

I load .glb file with 2 animations (“Idle” and “Animations”) for default loaded character

But while changes dress by click on button,

I am trying to keep that character in IDLE animation, but its not working as expected

Please help me with this

First, the animation you were trying to start is not Idle, its Animations. Second - if you want both model to continue animating, you need to start all animation groups that are names Animations. Something like this:

Focus Hair | Babylon.js Playground (babylonjs.com)