Boberts, if I am understanding correctly you are trying to use two different formats for the same expression, and the only means to accomplish this is going to be to do things in the expression itself such that it determines what the value is and you apply the formatting you want directly in the chart expression. So an If statement that determines if the value is a percent or a currency value and then you apply the appropriate number format as the result of that check. Unfortunately I am not very swift when it comes to the development side of things, so I cannot really even give you an example. but now that I have clarified, someone that is may be able to make some suggestions. If you have an example of the two different data types resulting from that base expression you have, that could be very helpful along with that expression, so they can try to do the modification to it to get everything wrapped into one expression.
If I have misunderstood, per Arthur's post, a small sample app would like be the most helpful, but anything additional you can provide should help here, as I did check the screenshot, but that really did not help me understand things any better.
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