Can you tell me please, is it a bug or I am doing something wrong?

I have a simple ISM. Each point have different scale in HDA. But in Unreal the ISM component have a proper scale on first instance only. All another have wrong scale values.

Can you advise me please?

Update : it's a my bad - I should use @pscale as a float variable.

For the vector scale I should use @scale.

Will keep it here in case if somebody else will get the same problem.