[PCB_FORUM] about Allegro and route constraints...

Hello all,
well there is a few months that I use Allegro PCB for my designs and I'd like to know how can I fix the length for some wires (especially for differential pair and digital signals). I've tried to do this with constraints manager, defining the max and min lengths to the same, but when I launch the Automatic router, it doesn't work (wait for specctra and doesn't reach that). I tried with attached properties but the automatic router doesn't recognize that...If somebody has the answer...
Thanks !

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