I'm experimenting with an idea at the moment, but have come up against a (small-ish) hurdle.

I have a family I want to control dimensionally by

I've the formula part down; I've instance (length) parameters, ie. "Y" driven by the product of a type (length) parameter "GRID_UNIT" multiplied by an instance (integer) parameter "GRID_X"... but when I use the grip-control (in a model environment) "Y" changes, but the formula appears to get overridden/forgotten... until either "GRID_UNIT" or "GRID_Y" are then editted, and then "Y" resets to follow the rule.

How do I get the grip-control talk/respect the formula so edits to the family can be done in either way and the parameters are return true? Dummy parameters? If so, for which, and how?

I have a family I want to control dimensionally by

__both__formula and grip-control - but can't seem to get the two to behave (together).I've the formula part down; I've instance (length) parameters, ie. "Y" driven by the product of a type (length) parameter "GRID_UNIT" multiplied by an instance (integer) parameter "GRID_X"... but when I use the grip-control (in a model environment) "Y" changes, but the formula appears to get overridden/forgotten... until either "GRID_UNIT" or "GRID_Y" are then editted, and then "Y" resets to follow the rule.

How do I get the grip-control talk/respect the formula so edits to the family can be done in either way and the parameters are return true? Dummy parameters? If so, for which, and how?

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