horse racing venues

Hi everyone, I am trying (without success) to create a trigger that will only fire at certain uk horse race tracks. Could someone please tell me the exact wording of a trigger expression that will enable me to do this? Thankyou. 

Hi
Couple of ways:

markets name contains "Wolv"
you can use abbreviations with this because it looks for the partial string

the other way is:

selections trigger expression market_venue is equal to "Wolverhampton"
not sure if you need quotation marks but try either way

so you can use a list (or file) for the venues you want:

selections trigger expression market_venue is in list "Wolverhampton", "Leicester", "Lingfield"