I spent a long time trying to figure this out myself....
The problem is that the other parameters (Line Length, Positon and the other Flip Parameter) weren't included in the flip action(s). You also need to make sure that the Parameters are included in the Flip Actions as well. The grip for the Horizontal Flip also needed to be added to the move Action as well.
Another thing is that the Flip Vision Line for the 'horizontal flip' needed to be moved over so that the node on that line is above the grip. If you don't do that then the grip finds it's way into a funny location.
I've included a file. Hopefully, this helps.
Include your other Parameters in the Scale Action as well.
Regards, Charles Shade
CSHADEDESIGN | AUTOCAD LT | LT-KB | DYNAMIC BLOCKS
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