I have implemented custom rules for the Kendo Validator.  I would like to be able to use a format string for my error message and replace parameters in it with values from the validation.  For example, on the server side I am using a format string of: "{0} cannot contain two groups with the name '{1}'." and I replace {0} with a friendly name of the input and {1} with the duplicated group name (a value available as a result of the validation logic).  If I use this same string as the error message for the Kendo validation rule, the {0} is being replaced automatically by the value of the "name" attribute on the input being validated, and the {1} is being removed.

Is there a standard way for me to provide my own values to format the validation error message?

Thanks,
Brian

Alexander,
Thank you for your reply.  I am doing as you suggested and using a method to return the message. 

If anyone else is looking to do this:
I added an attribute to the input that is being validated to provide the friendly name, and in the validator logic I add an attribute to the input and set it to the duplicate group name.  Then in the method for the error message I replace my placeholders in the error message with the values read from the attributes.

Brian