Make a trigger please!

Hope all is well!?

I'm looking for a trigger which will carry out a traditional martingale system.

* Back horse in play at X odds (X will be a range)
*If loss is incurred next triggered bet is to the sum initial stake^2
*if the loss continues 3rd trigger will be for the sum of initial stake^4.
*This process should continue until it reaches to the initial stake^7
1.If loss is incurred then stop the process
2.if win occured at any moment return to the initial stake.

Hope it's clear, if any questions please let me know.

Hello!

Please clarify the sequence:

After first loss, it's initial stake ^ 2, meaning initial stake multiplied by itself, right?
After second loss, it's initial stake ^ 4, meaning initial stake power 4, e.g. for a £2 it would be £8.
After third loss, it's initial stake ^ 8 or initial stake ^ 6 -- what's the progression here?