Condition Expression Language

The Condition Expression Language describes the syntax used to define rules in the Condition Expression field of an Exclusive condition. The language is deterministic and case-insensitive, meaning that the same input always produces the same evaluation result regardless of capitalization.

Variables

Conditions are evaluated against process variables. Variables are always referenced with a leading ampersand (&).

Examples:

• &orderTotal
• &ticketPriority
• &customer_country
• &createdAt

Logical operators

Conditions can be combined using the following logical operators: and, or, not.

Examples:

• &isActive.IsTrue() and &hasAccess.IsTrue()
• not &isArchived.IsTrue()

Grouping and precedence

Use parentheses to group expressions and control the order of evaluation.

Examples:

• (&a.IsTrue() or &b.IsTrue()) and &c.IsFalse()
• not (&status.EqualTo("Closed") or &status.EqualTo("Cancelled"))

Direct value comparisons

Conditions can compare values using the following operators: <, <=, >, >=, ==, <>.

Supported value types:

• Strings: "High", 'Uruguay'
• Numbers: 10, 3.5
• Booleans: true, false
• Other variables: &minAmount

Examples:

• &orderTotal > 1000
• &status == "Open"
• &score >= &minimumScore

Functions

Most conditions are written using function calls applied directly to a variable. The general syntax is:

&variable.FunctionName(value?)

Functions without parameters

These functions evaluate the state or existence of a variable.

Supported functions:

• Exists()
• DoesNotExist()
• IsEmpty()
• IsNotEmpty()
• IsTrue()
• IsFalse()

Examples:

• &email.Exists()
• &attachments.IsNotEmpty()
• &optionalField.DoesNotExist()

Functions with parameters

These functions compare a variable with a specified value.

Examples:

• &orderTotal.GreaterThan(1000)
• &orderTotal.GreaterThanOrEqualTo(500)
• &age.LessThan(18)
• &country.EqualTo("Uruguay")
• &status.NotEqualTo("Closed")
• &tags.Contains("vip")
• &email.EndsWith("@company.com")
• &name.StartsWith("Jo")
• &description.MatchesRegex("^ERR-.*")
• &createdAt.IsAfter("2024-01-01")
• &expiresAt.IsOnOrBefore("2024-12-31")

Combining expressions

You can combine logical operators, comparisons, function calls, and grouped expressions.

Examples:

• &priority.EqualTo("High")
• &priority.EqualTo("High") and &attachments.IsNotEmpty()
• (&orderTotal.GreaterThan(1000) AND &country.EqualTo("Uruguay")) OR (&priority.EqualTo("High") AND not &attachments.IsEmpty())

Considerations

• The language does not rely on runtime AI interpretation.
• Whitespace formatting does not affect evaluation behavior.
• Conditions can combine direct comparisons and function-based evaluations within the same expression.