> For the complete documentation index, see [llms.txt](https://docs.helmut.de/helmut4-releases/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.helmut.de/helmut4-releases/v4.6.2/helmut4-components/helmutfx/preferences/variables.md).

# Variables

Variables can be used within the streams to dynamically replace a key with a value. Via the wildcard {helmut.variable.?} the keys set here can be replaced by the set value. ? Needs to be replaced by the key. Variables can be used for an infinite number of workflows.

#### Example:

\- **Key:** Key\
\- **Value:** Value\
\- {helmut.variable.**Key**} leads to **Value**