Conditional Visibility & Custom Error Expressions

Rhythm supports powerful Javascript-based expressions for handling logic more complicated than can be represented using the rules editor. Underneath the covers, the expr-eval library is used for security expression evaluation, and full documentation can be seen here:

https://github.com/silentmatt/expr-eval

For form conditional visibility , the following objects are available during expression parsing:

 {    
      formValue  //the form value JSON
};

Functions

See common functions across all Rhythm expressions.