Another question but this time tennis.
If I want a trigger to fire in for example 15-0 situation, how can I write it? With market_score1 and ...2 probably but how?
Thanks!  
Hi
Understand how the market score is updated:
0-0   set score    set score 
15-0  first point  set score 
30-0  second point set score
30-15 second point first point
40-15 third point  first point
1-0   set score    set score
1-15  set score    first point
1-30  set score    second point
15-30 first point  second point
etc...
To answer your question 15-0 conditions will be:
and selections trigger expression market_score1 is equal to 15
and selections trigger expression market_score2 is less than 15