Tennis - serve held multiple times in a row

[satoshi-pl]

Hi all,
Technically, what’s the simplest way in Bet Angel to trigger an alert/bet once 5 consecutive service games have been held, potentially across multiple sets?

Should I use Stored Values or Signals (with increment)?

Do I need the Tennis Relative Score condition, or another tennis condition?

What’s the best way to keep counting across sets (and reset only on a break)?

I’ll layer other filters (odds, serve dominance, etc.) separately—this question is just about counting consecutive holds.
Thanks!