You need to create a new instance length parameter, such as "Flexible Width" (for example). Then, in the view select the dimension that is now associated wtih "Rough Width" and assign that to "Flexible Width". That solves the problem of the lack of grip controls in the project.
However, be aware that this family that you're doing is a door, and will appear in your door schedules. The proper family template would be a face-based template, classified under something else such as generic models.
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Alfredo Medina _________________________________________________________________ ______
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