// The next works:

#if defined _Filterscript

GetPropertyID( propname[] ) return CallRemoteFunction( "GetPropertyIDEx" , "s" , propname );

#endif

// And this does not:
#if defined _Filterscript

#if !defined GetPropertyID
	GetPropertyID( propname[] ) return CallRemoteFunction( "GetPropertyIDEx" , "s" , propname );
#endif

#endif