Hi Grace, You can actually pick a single element from the cluster. This way you do not have to unbundle the entire cluster.
In the Functions Palette, under "Cluster", place the "Unbundle By Name" icon on the block diagram and wire in the cluster. Use the "Operate Value" tool (the finger icon) and click on top of the right side of the "Unbundle by Name" icon. A selection will pop-up. Choose the element you wish to extract. The value of that element will be passed by wiring it within your vi. JLV
