Hello!
You will need to slightly change the conditions of your trigger: there is no need to use Excel in this case, you can use a simple text file and import the required values from it.
Just save your Excel file in CSV format using the Tab character as a separator. You will need to enclose each horse's name in double quotes. See the sample file attached.
Then add all the markets where you intend to trade that day and import the text file into MF Pro using the "Import selections for auto-trading" button. See a tutorial video on how to import selections from a text file.
https://youtu.be/-zNhSl5ypn0After the program imports your horses and greys out the rest of them, run the attached triggers.
Make sure you have tested the triggers in Test Mode. Also, in "Monitoring Options", set "Start monitoring events at 180 mins before the beginning".