# 7.6.20.13.1. Constant

Syntax

  Voltage [{of} SpeciesName] = Constant ([Toggle = toggle] | Value = value)

Scope

  Aria Material

Summary

  Constant value

Description

  The following options are present in most boundary conditions/sources. The meaning of each option is as follows:

  Toggle

    If given, specifies which toggle block controls whether this BC is active or not.

Parameter | Value | Default
--- | --- | ---
{of} | {of | species | subindex} | –
SpeciesName | string | –
toggle | “string” | –
value | real | –