Allowed expressions in schedule operations

Some schedule-operation parameters accept an expression rather than a fixed value. For example, If..Else, While.., and Conditional Operation use a condition that returns true or false. Set Parameter accepts an expression for its value.

Only equality (==, !=), comparison (>, <, >=, <=), and numeric arithmetic are supported in schedule-operation expressions. An expression field is not a general-purpose programming language.

Supported operators

Expression type	Supported operators	Example
Equality	== (equal), != (not equal)	3 == 3 returns true; 3 != 3 returns false.
Comparison	> (greater than), < (less than), >= (greater than or equal), <= (less than or equal)	5 >= 3 returns true.
Numeric arithmetic	+ (add), - (subtract), * (multiply), / (divide), % (remainder)	2 + 3 returns 5; 7 % 3 returns 1.

Choosing an expression

Use an expression whose result matches the parameter. A condition needs a true/false result, while a loop count needs a whole number. Arithmetic operands must be numeric; + does not join text.

Unsupported syntax

Logical operators such as AND (&&), OR (||) and NOT (!), function calls, and other scripting syntax are not supported in schedule-operation expressions. For more complex logic, use a Python script rather than entering code into an expression field.

These rules apply to schedule-operation expressions, not to Python script code or fields that specifically ask for a regular expression.