Hi,
The OtherSymbols property gives you access to the "SymbolScript" objects for other symbols. So you can access any public member of your SymbolScript class. To check for a crossover, you could do something like this:
if (SystemUtils.CrossOver(OtherSymbols["QQQQ"].SMA50, OtherSymbols["QQQQ"].SMA200))
{
// ...
}
Thanks,
Daniel