Use GetS(name) to retrieve the value of the name key from the top level of the execution context if it exists. If the name key in a lower levels of the execution context, it will not be returned.
When using Twig variables to retrieve a key's value, it is impossible to know if the key is located at the top level of the execution context or at a lower level. If you need to get the value of a key located specifically at the top level, use GetAbs().
How to use
Use the function in the following way:
GetAbs(name)
Input
name: the name of the variable (execution context key) whose value to retrieve.
Output
The value of the name key, or null if the key does not exist.
Examples
GetS("myVar")