dynamic column width in paginated Report Builder?

Hi everyone,

I have an SQL query that outputs the columns task_1, task_2, task_3, task_4 and task_per_id for each ID.
Now I would like to visualize this in a paginated report like this:

I thought this would be pretty easy, you simply divide the total space / task_per_id in an expression for the column width,
unfortunately, I cannot find a way to define the width of an object via an expression in the Report Builder.

Does anyone know how I can still get the above layout?

This is my sample report including data:
https://drive.google.com/file/d/1GDntAnrbE-jEgSSQpikVP9p3Pe-rCRKt/view?usp=sharing

At the moment it looks like this:

Thanks

Bodo