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Innovus with variable metal width based on metal length.

Hi,

I was tring to use Innovus to do PnR, and I am facing the problem that I have to widen the metal wires if their lengths excess a certain limit, for example, a M1 100um metal needs to be widened to 1.5um from the default 0.5um width. I did not find any techlef constrains that could do it or I might miss it. I know that I could setup NDRs in Innovus and route with a wider metal but I just want the metal shapes that excess the limit to be widened not the entire net.

Are there any suggestions other than NDRs? Thank you!

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