Nestled optimize functions

Dear all,
I'm experiencing troubles with nestled optimize function.

here below an example:

_SECTION_BEGIN("nestled Optimize");
tipo=Optimize("tipo", 1, 1, 2, 1);

if (tipo==1) //checked
{periodomedia=Optimize("periodomedia1", 50, 40, 60, 20);//NOT checked
media=MA(C,periodomedia);
}

if (tipo==2)//checked
{gg=10;//Optimize("gg",10, 10, 15 ,5);
periodomedia=Optimize("periodomedia2", 50, 50, 75, 25);//checked
media=MA(C,periodomedia);
}
Buy= Cross(media,MA(media,3));
Sell = Cross(MA(media,3),media);
Buy =ExRem(Buy, Sell);
Sell =ExRem(Sell, Buy);
_SECTION_END();


as a result of backtest, only tipo==2 conditions are processed:

no one can help me?
thanks,
cippo