Reducing the volume in an open trade

[Sadegh.z]

Hello everybody How can we save the transaction with the interval, for example, if he gave me the first goal, 90% of the volume of the transaction will be saved, the governor of our transaction will not be closed and will remain in place with the remaining volume. How can I do this? Do you know a block that Vasili To be able to reduce the attack of an open transaction

[l'andorrà]

Not sure I fully get it. Do you mean closing partially 10% of lot size when some price level is hit? And what does 'Vasili' mean exactly?