Note The name of a sequence must be unique if it is contained within a sequence file. Inserting two or more sequences with the same name into a sequence file might cause unexpected behavior.

Note TestStand does not validate variable names you create programmatically for invalid characters, such as spaces, which can result in errors when you use expressions. Use the PropertyObject.ValidateNewElementName method to validate variable names. TestStand expressions require PropertyObject names to be strings that contain only letters, numbers, and underscores. PropertyObject names cannot contain spaces, start with a number, or be empty. Additionally, the PropertyObject name cannot be "Value", and you cannot have duplicate subproperty names. For example, MyVariableName_2000 is a valid PropertyObject name. Names of elements in a PropertyObject array can contain any character. Both sequence names and step names are examples of such named array elements. However, sequence names cannot be empty or contain control characters. You cannot have duplicate sequence names. NI is reserved for root attribute names.