MarkRMichaels - unfortunately not, considering that I tried this way and others, but it seems that construct2 takes into account many things such as to render (fps) to give the value of every x second.
If I put a count of 90 seconds and I need every one second subtract 1 from the counter until it reaches zero, it must be the most accurate.. and the rates vary widely, sometimes going one second, will further 0.7 seconds, and still 1.2/1.4 seconds, this makes the 90 seconds impractical and totally wrong.