how to crreate a trailing stop lesser than the limit point of the broker?

 

if my broker have a trailing stop of 20 point how i can crate a trailing stop of number of point <20 ?

i have already try with global variable, setting line but every one are often too late and the price drop the setting how i can do ?

 
asaqaz: my broker have a trailing stop of 20 point how i can crate a trailing stop of number of point <20 ?

You can't. Best you can do is remember where the stop should be and close the order when price triggers it. Put the actual SL at the limit in case you loose connection.