Dynamic Adjust Status Indicator

Hi all,
With in my Form I'm performing a number of calculations which result in a final score, which I then display with an indicator, where the color depends on the score achieved. However for this indicator is there a method to adjust the width so it increases with the score.
Have tried a another variable and then reference it within the width parameter - but that is not processed. 

Have attached an image and highlighted the attribute I would like to dynamically adjust.

Rgds
Patrick

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Patrick O'Neill
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