Steam Hours Played Hack.

So my friends, I would like to have a hack that can change my hours played of CS:GO and CS 1.6
now have +451hr in CS:GO

But I would like to have +1.000 or +2.000 hours played

Is it possible?

regards.

im in a hacker group and we can say, no it isnt possible, it WAS possible but now not (: unfortunately...