PCB layout creation cannot cope with microstrip elements defined in equations

[afrb2]

I usually use w50 for width of 50 ohm microstrip to avoid massive editing when changing substrate. but when trying to create a PCB layout from schematic this results in 0 width tracks. Going back and manually editing all the widths to a numeric value fixes things.  If one is slightly careless doing this then the Qucs studio hangs on selecting

[QucsStudio]

Yes, you’re right. Using variables here is not yet implemented, but it will be in the coming release.

[Author]

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