
Explanation

Box 1: less
less checks whether the first value is less than the second value. Return true when the first value is less, or return false when the first value is more.
Box 2 : ticks
ticks(timestamp: string) - Returns the number of ticks (100 nanoseconds interval) since 1 Jan 1601 00:00:00 UT Syntax: ticks('<timestamp>') Box 3: triggerBody triggerBody returns a trigger's body output at runtime.
Box 4: ticks
Box 5: getFutureTime
getFutureTime teturn the current timestamp plus the specified time units.
Syntax: getFutureTime(<interval>, <timeUnit>, <format>?)
Reference:
https://docs.microsoft.com/en-us/azure/logic-apps/workflow-definition-language-functions-reference