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Spline Dynamic Block with Arrowhead

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I am attempting to create a Dynamic Block for electrical home runs that behaves similarly to the home runs my company uses in Revit. Essentially it is a Spline with (3) Control Vertices and an Arrowhead at opposite end from the Basepoint. I have created the Dynamic block to include the desired visible elements and I've gotten the Spline to behave correctly using Stretch Actions. The only problem I am having is that I can't get the Arrowhead to follow the end of the Spline correctly. I would like it to "bend around" with the Spline but it wants to stay at a fixed angle. If anyone can point me in the right direction (pun intended) or modify the attached example of my Dynamic Block, that would be appreciated.


Also, I am aware there is an Mleader Style that utilizes a Spline instead of a straight line. However, the Spline is based on Fit Points instead of Control Vertices and simply does not behave the way we need it to, thus the reason for the Dynamic Block.




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