LED format keeps changing back to default

I have an expression tag linked to a LED display. I have changed the Number Format Pattern from #,##0.## to #,##0.#####. However, if I make a change to the expression tag then the Number Format Pattern changes back to #,##0.##. Why does this occur and is there a way to keep it from changing back to this default?
Thanks,
Kurt

Is there a binding on the number format pattern? This can occur if you drag and drop a tag onto the component.

If there is, remove the binding and set the number format pattern to #,##0.#####.