Override labor price in scripts

I would like a variable that can be added to Create-Syncro-Ticket-TimerEntry in scripting that will override the labor hourly price. For instance if labor is $100 per hour and I want a ticket charge that is $20 per hour, I could use something similar to the following.

Create-Syncro-Ticket-TimerEntry -TicketIdOrNumber 123 -LaborCharge 20.00 -Notes "System Update"