How to change 'Line Thickness' value of already-drawn vector shapes to 'float', not 'int'?

[NKMT]

Hi everyone. I’m using Krita version 5.2.6.

As far as I know, the only way to change the ‘line thickness’ of (already-drawn) vector shapes is manipulating ‘Thickness’ value in ‘Tool Options’ docker. Like fig1 below.

(fig1)

But I want that thickness value to be ‘float’, for example 0.1 or 2.5 and so on. The reason is, of course, sometimes I want subtle variance among lines in my artworks.

Unfortunately Krita seems to have heavy-restriction about this. In the Tool Options docker, you can only input ‘int’ value.

The only way I can get ‘float-valued thickness’ is set ‘Brush Size’ to float and then draw a new vector shape, FROM THE BEGINING. Like fig2 below.

(fig2)

But this is not I want. Also, once you re-set the thickness in the tool options docker, the vector shape can never get back to float-thickness.

I want some functions which can change line thickness in float, freely whenever I want.

Related to this, while I was searching through the internet,
this post (Reddit - Dive into anything) shows exactly what I want (float-valued thickness).
Though I don’t know why the unit is mm, not px, that’s not big deal for me.
I want apply this functionality into my Krita as well, but I don’t know how to.

(fig originated from the link above)

[wolthera]

you can select the “px” bit and write “mm”. It’s not the most discoverable UI, but the problem is that there’s too little space there to have dropdowns like we have elsewhere… (In Krita 5.3, you also have rightclick unit-changing available, courtesey of @Grum999, I believe )

[NKMT]

Hallelujah- you’re right!
I’ve just downloaded Krita 5.3 pre-alpha, and discovered that
we can input ‘float’ in ‘Thickness’ tab in the Tool Options docker!

Wow, I don’t know how to express my excitement!

Thank you sincerely.