The Variable Picker

Double-clicking an empty term box opens the Variable Picker — a tree of everything a term can be. It is the single place you choose equipment signals, globals, and the placeholder functions.

Where it comes from

In the condition editor, double-click the empty term box (highlighted below, just left of the red delete). The Variable Picker opens over the editor:

The categories

Category	What it inserts
Equipment	An interface signal of an equipment, e.g. Motor.IMotor.Running (drill in Equipment → Interface → Variable).
Global	A project global variable, e.g. Global.Temperature.
Edge Detection (Bool)	Rising Edge R_TRIG and Falling Edge F_TRIG on a Bool signal.
Value Change (Int/Double)	RISE, FALL, CHANGE on a numeric signal.
Array Operations	ALL, ANY, NONE over an array compared to a value.
Composite State	IN_STATE — is a composite in a given state.
Timer	A timer's Done flag.
Queue	QUEUE_EMPTY, QUEUE_FULL, QUEUE_OK, QUEUE_OVERFLOW.

Equipment & globals side by side

Expanded, the picker shows each equipment's signals with their types, and every global. Bool signals are stand-alone terms; numeric signals (Double/Int) become comparisons.

Placeholder functions

The Edge Detection and Value Change categories insert placeholder terms — a rising edge, a falling edge, a value change — whose concrete signal is chosen when you use the condition in a composite. More on these in Placeholders.

Pick a leaf, confirm the Path at the bottom, and click Add — the term drops into the IF expression.