TIWCGJQGridColSearchRules.OnCustom Property
this function should be used when a custom option is set to true. Parameters passed to this function are the value, which should be checked and the name - the property from colModel. The function should return array with the following parameters: first parameter - true or false. The value of true mean that the checking is successful false otherwise; the second parameter have sense only if the first value is false and represent the error message which will be displayed to the user. Typically this can look like this [false,”Please enter valid value”]
published property OnCustom: TIWCGJSonFunc index 10 read GetFuncValue write SetFuncValue;