Visible or unvisible checkbox from step

First I look for similar topic and only found this once that talks about buttons, nice solution but not suit to checkboxes :

I have a step with several fields and in a condition I want to show 2 checkboxes (If radio buttons were exists, I would prefer them), but show those checkboxes only if a condition of my flow equals to YES (if a boolean variable is set to YES, show them), on the attribute list there is no visible attribute that I can change on runtime and didn’t find any other way to do so.

Can anyone help me how to solve my issue ?

Thank you,
Amit Berku