How to select the rebar 0, 2, 4, 6

Hi All Sir!
I would like to seclect the rebar 0, 2, 4, 6,… to set rebar. But i can’t do it. Please, I need your help!

You could choose every n’th item?

Sir! Cant you help me get the location of the rebar? I would like to get the location, and seclect it.

Thank you Sir!

What have you tried so far in regards to trying to get the location?