Simple but very annoying problem... the data passed is text, not a number, so can't be used to feed numeric values. If you're lucky and the text only includes numbers and a decimal, you can do math on it to convert the text to an actual number before plugging it into the prog bar. If it includes a percent, you're prety much hosed.
Oh and dynamicdata only passes values directly to the parameters assigned to it. In this case, text="###%". So if this is going to work at all, you'll need some event to pass the value from the text parameter to the prog param. Something like OnHoverIn="progress=text"
Its not going to update automatically.
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