Reference
Starting with version 14.5.0, SAV Charts is provided with two template parsers.
XML Parser Tags
XML parser is the historic parser developed for TYPO3 6.2. and later.
The general syntax for references is tag#id.
Fluid Parser ViewHelpers
Fluid parser is the new parser based on Fluid syntax.
The general syntax for references is tag__. The value
associated with the reference is obtained by the Fluid accessor
{tag__.