LookupHLS Color Controls: How to get them to work?

Yes, I read page 300 of the manual, and pages 81-82 of the tutorial.
Source and Destination swatches work great in the ColorMatch node,
but they don't seem to have any effect in the LookupHLS node.
I've got a curve visible, I drag the colors, but no effect on the image.
?

Hey Zebulun,
Thanks for your reply. It made me revisit the problem, and I realized what I was doing wrong.
I was activating the curve, then dragging the colors to the LookupHLS swatch. This procedure
made the swatch change color, but did not create the points on the curve.
If, however, you +select the swatch first+, then drag the color to it, it works fine.
I would consider this to be a bug, or at least inconsistent behavior, because with other nodes,
like ColorMatch or ColorReplace, you can drag a color to the node's color swatches,
+without selecting the swatch beforehand+, and it will work fine.
This problem seems to be common with all the Lookup nodes, probably because the
user interface is slightly different.
Les Stuck

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