When you use a trigger condition in Storyline to evaluate a number Between two values, the condition will be considered true when the number variable is equal to or between your starting and ending values.

For example, a condition that checks to see if a number variable is between 1 and 10 is considered true when the number is equal to 1, equal to 10, or anything in between those values.

Storyline 360

Storyline 1, 2, 3