Icefrog is not the worlds greatest map maker, or even near that. He just hit it lucky with an idea that works and people like. I dought he knows anything about this kind of thing, for if he did it would be in his average map DotA allstars which clearly a lot of stuff is not.
The answer is no, as the tooltip engine does not support triggers and the integers used in triggers are within the trigger engine. This is hard coded and triggers are not as open as a language like C++ so there really is no real way to do this.
Icefrog is only known as a great map maker because his map is the most played. That does not mean he is the greatest triggerer or even if he knows the most general WE knowledge. I dought he is stupid though but neithor do I think he is that good (he is not a vexorian (a person at some stage who people thought was the best triggerer and and knew the most WC3 knowledge of every well knwon person, but never really produced anything that major for battle net play (no major maps))).