Types & variables

Primitive types are int, float, bool, string, datetime and color.

int      period = 14;
float    price  = 100.5;
bool     active = true;
string   note   = "entry";
datetime start  = '2026-07-30 09:15';
color    up     = #00ff00;

Constants

A const must be initialised and cannot be reassigned.

const int MAX_QTY = 5;

Arrays

Declare an array with type[]. Indicators fill arrays; you can also initialise one with a list. Index with [i].

float[] sma;                    // declared, filled later by an indicator
int[]   levels = [100, 200, 300];

int first = levels[0];          // index access — [0] is the first element

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