How can I insert facebased element on structural beam surface?

hi,

I want to divide selected surface into selected number of segments and insert details in the middle points.
It looks like I managed to get points where I want to insert facebased details.
Although circles looks nice and in the place I want, but details goes to level one.

my beam is on level one with start/end offsets = 500.

is it possible to do what I want?