Plant a lay bet x ticks below the starting price in play

Hello

if anybody can help me set this up i would appreciate it.

I'm trying to set up a trigger that,
At the moment of in-play it plants a lay bet a x-amount of ticks bellow waiting to get matched.

i've tried creating a constant(var1 = -10) and adding it to the Price input of the trigger like so:

Trigger: lay_price + var1



but its not working. 
I guess i dont know what im doing.


Thanks

Found a way to do it.

with the last_last_traded * var1

var1 = 0.9

If theres other ways of doing it please let me know.

Thanks

Hi
check the helpfile for the function r_ticks(original_price, ticks)
so in your example: r_ticks(last_last_traded, -x)

or if your market supports SP:  r_ticks(actual_sp, -x)  

I am very interested in this matter. But still did not get into something