Can an open position be selected by ticket? (Seems like no)

 
Maybe I have missed something, but let me express following complaints. What I find a significant limitation in MQL5 compared to MQL4 is the lack of function for selection of an open position by ticket. What if I have more than one position open on a single symbol and want to modify them separately? Also the way positions are closed in MQL5 seems to be so awkward when compared to MQL4. These opposite trades with new ticket number bring so much confusion. Many european brokers support hedging.  Is the way positions are closed in MQL5 making it useless for european brokers?
 
You can't have more than one position per symbol. That's why it's called position instead of order.
Reason: