How double the stake in a inserted way

Hi,

I´m creating a trigger and I want it works with a double stake without matter the previous result and then go back to the default stake, like this:

1. Bet $10,   2. Bet $20,   3. Bet $10,   4. Bet $20 .............

How can I do it?

If you bet (assuming lay) each game

Code: [Select]

lay_size*(games_played%2+1)
if not

Code: [Select]

IF(hist_1_laya=lay_size,2,1)*lay_size

Hi Tim,

Thanks for answer, unfortunately I must confess that I do not understand anything.
I´m new in this trigger think, also in X-Febber.

Please help me a little more with this

Many thanks

Trigger should be like this:

Action: Lay
Price: Current best
Amount: IF(hist_1_laya=lay_size,2,1)*lay_size

Other fields for example
Round: 2
Selection: Favourite
Channel: Poker