## VariableCollection Indexer (1 of 2) Gets or a sets a document variable by the case-insensitive name. `null` values are not allowed as a right hand side of the assignment and will be replaced by ......## VariableCollection indexer (1 of 2) Gets or a sets a document...Contains("City"), Is.False); // 2 - By index: variables.RemoveAt(1); Assert...