Try Set Var

Category: Control

Guards only evaluation of `value`; it does not catch later statements or create a transaction. On failure it stores `fallback` or null, optionally stores false plus the error message, and continues. Use it for row-local parsing and optional reads, not to suppress fatal setup, permission, or mutation failures.

Inputs

Input	Required	Value Kind	Types	Enum Values
name	yes	string	—	—
value	yes	expression	—	—
fallback	no	expression	—	—
storeSucceededIn	no	variable-name	—	—
storeErrorIn	no	variable-name	—	—

Notes

• Evaluates value and stores it in name. If that expression throws, the statement stores fallback (or null when omitted) and continues.
• Optional storeSucceededIn receives a Boolean and storeErrorIn receives the error message or an empty string after success. All named outputs must be distinct.
• Only expression evaluation is guarded. An invalid fallback still fails, and the block does not catch later statements or turn a multi-step mutation into a transaction.
• Use this for genuinely row-local parsing or optional reads in best-effort workflows. Do not use it to hide fatal setup, permission, or mutation failures that should stop the run.