Set Flow Variables flow logic
Summarize
Summary of Set Flow Variables Flow Logic
This flow logic allows you to assign values to existing flow variables, which store data for use later in the flow. These variables can reference data pills from earlier in the flow, enabling dynamic data handling and decision-making.
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Key Features
- Variable Assignment: Assign values to flow variables, which can be strings, scripts, or references to other data pills.
- Order of Execution: Variable values are set in the order assigned. Ensure that referenced values precede the variables that use them to avoid null values.
- Inline Scripting: Enable scripting for dynamic value assignment using the script editor, allowing for more complex logic.
- No Outputs: This flow logic modifies variable values without producing direct outputs.
Key Outcomes
By effectively using flow variables, you can enhance the functionality of your flows. For instance, you can use a flow variable to store and retrieve incident numbers based on category checks, which can later be utilized in actions like sending emails. Understanding and utilizing this flow logic will enable you to create more efficient and responsive workflows within ServiceNow.
Assign a value to one or more flow variables, which store flow data as data pills. Access flow variable values by referring to their data pill.
Inputs
| Field | Description |
|---|---|
| Name | Name of the variable. Select from the list of variables available for the flow. |
| Data | Value for the variable. Enter a string value, input a script, or use a data pill. Variable values can reference any data pill from earlier in the flow, including other variables. If you set variable values by reference to other data pills, you must maintain the order of
the variable assignments. The referenced value must always come before the variable that uses the referenced value. Changing the order may produce null values. To assign an empty value, leave this field empty. Note: Flow variable values are set in the order in which they're assigned from top to bottom. If you set the value of the same variable multiple times, the flow only uses the last value set. To enter a script, select the Toggle scripting on for [variable] icon. Enter your script in the script editor. For more information about inline scripting, see Inline scripts. |
Outputs
This flow logic produces no outputs but does change the value of flow variables.
Usage
Flow variables store flow data as data pills of a specific data type. You can access flow variable data pills from the Flow Variables section of the Data pane. To use a flow variable value, select the data pill from the Data pane or the pill picker just as you would any other data pill.
Set the incident number variable value to a flow data pill value
In this example, the flow checks the category of an incident record. If the category is network, a flow variable is used to store the record number.
Later in the flow, the Send Email action uses the incident number flow variable as part of the email subject and body.
Set the incident number variable value using a script
In this example, the flow checks the category of an incident record. If the category is network, a flow variable is used to store the record number. In this example, the flow variable is set from a script rather than a data pill value.
/*
**Access Flow/Action data using the fd_data object. Script must return a value.
**Order number is offset by +1 in Error Handling Section.
**Available options display upon pressing "." after fd_data
**example: var shortDesc = fd_data.trigger.current.short_description;
**return shortDesc;
*/
var incNumber = fd_data.trigger.current.number;
return incNumber;