Help .. Need a trigger for Hi-Low

Hi, I'm new here and this is my first post. I'm looking for a trigger for Hi-Low that let me Lay every card (one at the time) starting from card# 2 until It win a predetermined amount or rich a preset stop lose amount... then, whatever is the outcome, next game start to bet the default amount all over again...
It's just and idea but I don't know how to build a trigger to accomplish this; so, if is anybody here that could help with this project, it will be very much appreciated.
 

Trigger file attached.

Thanks Tim,

I really appreciated your reply and the Trigger... But I do have some questions:
How to get the trigger (or the program) to increase the lay bet accordingly to recoup the previous lost amount +  the preset amount to win of $4  
Let say System Lay card# 2:  $4 @ 1.51 =  $2.04 liability  >>>  Lost.

Now card# 3 is at 1.81 odds;  So I need the system to lay card# 3 in the following way:
 Lost amount  of $2.04 + $4 =  $6.04  @ 1.81 odds=  $4.09 liability >>>  Lost.

Now card# 4 is at 1.51 odds;  So I need the System to Lay card# 4 in the same way:
Lost amounts  ($2.04+ $4.09) + $4 =  $10.13  @ 1.51 odds=  $5.17 liability >>  WIN.


I need to tell the trigger to set a Stop lost at $20, therefore if the lost amounts in any game get to $20 it should stop betting and re-start the whole cycle again from the default bet on the next game;  the same will apply if I win the bet. .. So, please could you add those changes to the trigger or give me some advice in how to accomplish this?

Thanks once again

Changed the trigger.
It probably works not as you need because there are usually 2 unsettled bets and it doesn't count the loss for the second one.
Let me know if you need me to correct that.