A few comments:
1. Try a single-element Build Array function.
2. Try to be a bit more descriptive of your problem in the future.
3. This is a general LabVIEW question, in the future please post in the LabVIEW General group unless the question is specific to features of the Real-Time module. You might also check out online LabVIEW training courses, which are really cool.
