When setting parameters in Creo, sometimes you may want these parameters to be driven by a measurement. In order to so, first take the measurement by going to your analysis tab:
...and selecting the Measure icon in the Measure Group.
Then select the type of measurement and the measurement references. Next, Select the save icon in the top right, and choose "Make Feature" and name your measurement feature.
Measurement features show up as features in your model tree, and as with any other feature in your model tree their order in the model tree matters. In the figure below we have two volume measurements saved as features. One before the shell feature, and one after the shell feature.
We can use these measurements to determine the capacity of the bottle by going to "Relations" in the Model Intent group of the Tools tab...
...and setting up a new parameter called Capacity.
To do this, expand the Local Parameters at the bottom of the menu and click the icon and type in the name of the parameter and leave the type set to real number. Next, define capacity in the relations box to be the value of the first volume measurement minus the value of the second volume measurement.
To do this you enter the following: type of measurement followed by ":fid_" (ex: volume:fid_) After the underscore you enter the name of the specific measurement (ex: volume:fid_measurement_volume_1). So for this example you would enter "Capacity=Volume:FID_MEASURE_VOLUME_1-VOLUME:FID_MEASURE_VOLUME_2"
Select OK and regenerate the model, and the parameter will be defined.
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