CLOSE ACTIVE TRADE AND PENDING ORDER AFTER EXAMPLE 4 HOURS

Hi

 i want EA who will close active trade and pending order after a the time that i have choose.

 if i enter a pending order at 15h00 it most be closed at 19h if no trade because i had choose to close after 240 minutes

 if the pending order is enter at 15h00 and transformed in active trade at example at 16h45 , the trade most be close anyway at 19h  because i had choose to close after 240 minutes

if i enter a buy or sell directly in active trade the trade must be close after the time that i have choose example 240 minutes. 

 i must be able to choose the number of minutes that the trade will be closed 

thanks