How to ModifyOrder() pending (buylimit & selllimit) using MQL5 syntax code?

[Piotr]

Hi,

I have to modify three things on pending orders: buylimit and selllimit.

1). OrderOpenPrice(),

2). OrderStopLoss(),

3). OrderTakeProfit().

Above three things are defined as double parameters:

1). double ooprice <- OrderOpenPrice(),

2). double osl <- OrderStopLoss(),

3). double otp <- OrderTakeProfit().

My question is:

What MQL5 syntax code should I use in order to modify above parameters on opened pending orders buy limit & sell limit?

Please for the example using names of my parameters.

I tried https://www.mql5.com/en/docs/standardlibrary/tradeclasses/ctrade/ctradeordermodify

but there is no EXAMPLE. My code does not WORK.

[Piotr]

Has anybody any simple & good working idea how to do it?