Call for Master instrument name in script

[alexstox]

Hello. How to call for Master instrument name? I tried like this in MyIndicator(string symbol)
Add(MyIndicator(Instrument.MasterInstrument.Name)) ;
But it doesn't work.
Because script see "EURUSD" instead of "$EURUSD"

[NinjaTrader_Bertrand]

alexstox, I would suggest instead using the fullname here - https://www.ninjatrader.com/support/...t_fullname.htm