Configuring a Sequence from LabVIEW is possible. I suggest using the existing Operator Interfaces because it will require alot less work than building something from scratch. The Operator Interface performs operations using Command objects. It also provides the ability to implement
Custom Commands. Using Custom Commands you can add functionality such as configuration for specific steps. The
Adding Custom Commands to the LabVIEW OI describes how to Edit Numeric Limits from the OI. You should be able to easily convert this over to edit specific steps such as the ForEach step type.
Let me know if you have specific questions.
Regards,
Tyler Tigue
Applications Engineer
National Instruments