[amibroker] Define a non Array Variable that will keep its value through intervals

[fgronning]

Hi, need to know how I can set a variable that is not an array 
variable. So I can set 
a = 0; // to init only want this to exec once on startup.

if (isTrue) {
  a = SelectedValue(C); // just sample setting the value
}

Now when moving to next time interval and "isTrue" is false I would 
want "a" to keep/retain it's value and not be set to 0.


Grateful for help  .. Jof