Help please. Reconstruction name variable

[[Deleted]]

Hello,
I remember that I did in an EA long ago. But now I do not recall

example:
I want to rebuild a variable name .

I want the variable "xx" takes the numerical value of EURUSDbid

double EURUSDbid ;
double xx;

xx = "EURUSD" + "bid"; //obviously does not work. "xx" picks up the value string, not the numerical value of variable "EURUSDbid"

You can help me?
Thank you very much at all.

Cordial greetings

[Ray]

What are you trying to do?

[[Deleted]]

PHY, thank you very much for your interest in my question

It is very difficult for me to explain.
Working with 28 symbols at once, treated as a whole.
Comparisons are multiplying exponentially, hundreds and hundreds.
What they ask me greatly facilitate things.

Many greetings.

[Ray]

What are you trying to do?