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Automate Your Business Processes with Salesforce Flow
Global Constants Flow Approval Processes Resource

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Global Constants Flow Approval Processes Resource

Use fixed, system-provided values such as EmptyString, True, and False.

Required Editions

View supported editions for Flow Approval Processes.
Global Constant Label Supported Data Types
{!$GlobalConstant.True} True Boolean
{!$GlobalConstant.False} False Boolean
{!$GlobalConstant.EmptyString} Blank Value (Emtpy String) Text
Example
Example

When you create a Boolean variable, $GlobalConstant.True and $GlobalConstant.False are supported. When you create a Currency variable, no global constants are supported.

Null Versus Empty String

At run time, {!$GlobalConstant.EmptyString} and null are treated as separate, distinct values. For example:

  • When you leave a text field or resource value blank, the value is null at run time. If you want the value to be treated as an empty string, set it to {!$GlobalConstant.EmptyString}.
  • For a flow approval process condition, use the is null operator to check whether a value is null. If the condition compares two text variables, make sure that their default values are correctly set to {!$GlobalConstant.EmptyString} or left blank (null).
 
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