Helmut variables can be used within the streams or preferences to dynamically replace a key with a value. Alternatives to this variables are Store Variables or Temporary Variables.
Those variables can be used for dynamic cascades and reduce the amount of static paths. Example
Path of AME Application in AME Render Node: /Applications/Adobe Media Encoder 2023/Adobe Media Encoder 2023.app By using a helmut variable this can be changed to the following
After setting up this variable the new path would be: {helmut.variable.AME Path}
Please have a look into Helmut Variable ? for a detailed information how to use the dedicated wildcard.
Helmut variables ARE case sensitive - please pay attention for correct usage "AME Path" & "AME path" would give you two different results