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Repeating fillet

This is a worm. It has #segments in its body. I have shown fillets here. I need to repeat each (front, back) fillet #segments times. That number is currentlly 15, but think of that as being a Configuration parameter and it can vary from, say, 6 to 30 (which is about the maximum I can print diagonally across my print bed).
When I select a linear pattern, the entity to pattern apparently cannot be a fillet. I also realize I may have to venture into scripting language to do this. I would prefer to avoid this as my student is 14 and not a programmer.
Comments
It depends on the type of linear pattern you select.
If you do a feature pattern, it could work: make sure "Reapply Features" is selected.
But nowadays an even stronger tool is available:
Just recently Onshape released "Query Variables". This is the perfect situation for that tool:
Create a "Query variable" to automatically (and dynamically) select the proper edges.
choosing the right settings for the Query may take some practice and only if you share your doc, i could help with that in an example.
then feed the query variable into the fillet entity selection field and Voila.
NB it seems the worm-segments are not attached to be one part. Perhaps the part studio should only contain one separate segment, and the pattern should be done in the subsequent assembly.
That would be best practice, since this way you're creating a lot of different CAD parts that represent the same actual geometry.