Hi would really appreciate if someone could test the following system for me.

Rules:
1. The horse must have the highest win strike race in the race.
2. Must have finished 4th or worse at its last start, but not beaten by more than 4 lengths.
3. Must have barrier 7 or wider

If possible please do seperate results for country/provincial/metro as i think this works better on country and provincials than metro.
Thanks in advance for your help. There may be some more refining rules to come.