How i do for edit a variable of argument in a function

Question

Hi, i need do a function that edit the variables of his arguments. Here i annexed a example: https://code.sololearn.com/W6TFr5HOWUBx/#html

I need that x = 12 and y = 25. Thanks.

PD: Sorry if i commeted a mistake, i am learning english.

PD2: I need this function for this:
function Convertir_Data(Data,Estado) {
if(Data === ""){
Data = Nota;
Data = parseFloat(Data);
Estado = true;
}
else{
Data = parseFloat(Data);
Estado = false;
if (!(Data <= 5.0 && Data >= 0.0)){
throw new Error("Error, el valor ingresado no es válido. Por favor revisa las condiciones de entrada de datos para solucionar este error.");
}
}
}

Answer 1

var x = 12;
var y = 25;