From Bright Pattern Documentation

# Integer Expressions

Some helpful information on using integer expressions in the Scenario Builder application is given as follows.

- An expression starts with = sign, e.g. in "a=b" assignment block, =2+3 in the value field would result in 6. If you omit the equal sign, the result would be "2+3"
- Numbers can have the unary minus operator (e.g.,
*-2*).

- The four arithmetic operations and parentheses, including nested ones, are supported (e.g.,
*(2+3)*((7-1)/2+1)*).

- Division by zero produces an error in the log; the operation result is undefined.

- Strings cannot be mixed in one expression with numbers (e.g.,
*=2 + “string”*is invalid).