Are you sure that you mean chart and not a table or multi-column listbox? A waveform chart doesn't have columns. In any event, I'm assuming that you are using property nodes of some type. Some properties are not available in the run-time engine. Right click the property and select help for that property. It will say whether it's available or not. Could you post an example of the VI and subVI that you're having a problem with? That's the best way for someone here to look at it and give an answer.
