Set Variable Node

Set Variable changes what the story remembers without asking the player for text or a choice.

Use Insert > Dialogue & Logic > Change Variable for route flags, counters, affinity points, unlocks, and short pieces of state that later conditions should read.

Properties

Field	What it does
Name	Optional editor-only name for the node.
Variable	Variable this node changes.
Operation	Operation allowed for the selected variable kind.
Value, Append Text, or Amount	Operand used by the operation when one is needed.
Next	Node that runs after the variable changes.

Operations

Variable kind	Operations
string	set, append
number	set, increment, decrement
boolean	set, toggle

If older project data contains an invalid operation for the variable kind, VNC treats it as set. You should still fix the field in Properties so the route is clear.

Runtime behavior

When the node runs, VNC reads the current variable value, applies the operation, stores the result, then continues to Next.

If the selected variable is missing, the node cannot update story state. Properties and Output should point you toward the missing variable before runtime testing.

Examples

Goal	Setup
Add affection	Number variable averyTrust, operation increment, amount 1.
Mark a route open	Boolean variable helpedAvery, operation set, value true.
Add text to a note	String variable clueList, operation append, append text , library key.
Flip a flag	Boolean variable lightsOn, operation toggle.

Set Variable nodes are quiet, but they make later branches meaningful. Name them clearly when the route depends on them.