Trade reversal based on basket of 3 currencies profit level

[mmcgg]

Seeking if someone can provide a script to execute this trade strategy: "I set up a basket of currencies, for example, [+X, +Y, -Z] and the trade reverse to [-X, -Y, +Z] when my initial basket has reached a certain performance in % (not in price!), for example, when [+X, +Y, -Z] (at t=1) = 1.03*[+X, +Y, -Z] (at t=0)"

Thank you,

 

[halcyonguy]

Seeking if someone can provide a script to execute this trade strategy: "I set up a basket of currencies, for example, [+X, +Y, -Z] and the trade reverse to [-X, -Y, +Z] when my initial basket has reached a certain performance in % (not in price!), for example, when [+X, +Y, -Z] (at t=1) = 1.03*[+X, +Y, -Z] (at t=0)"

Thank you,

sorry, i have no idea what you mean by x,y,z ??
edit your post and use real symbols and prices to describe what you want