To implement the mocked foreach, I use an extension method:

public static class Extend
{
     public static void All<T>(this IEnumerable<T> source, Action<T> action)
     {
         foreach (var item in source)
             action(item);
     }
}

I want to change the money field of each npc in List<Npc> NearNpcs to 10, so I wrote a Lambda string:

"NearNpcs.All(n=>n.money=10)"

(The InterpreterOptions.LambdaExpressions setting is already turned on, and the Extend class and associated required variables are registered.)

It reported the error:

DynamicExpresso.Exceptions.ParseException: A value of type 'Int32' cannot be converted to type 'Boolean' (at index 0).

Does Lambda parsing currently only support conditional parsing that can return bool?