Hi, I want to modified the slope stair, but the option is not activate. See the screen shot see below.
If the Floor-to-Floor Height and tread depth is mentioned then the slope is always fixed.
I have not a tread depth in the proposed parameters.
See if this wiki helps: https://communities.bentley.com/products/building/building_analysis___design/w/building_analysis_and_design__wiki/40596/placement-properties-are-missing-in-the-place-stair-tool
So it is not possible to change the slope of stairs?
Did you check the Wiki mentioned above?