Editing Multiple Generator Variables easily

[Horibe]

Hello,

I am loving Curvy and I am very thankful for the support I have received on this forum.

I have a lot of splines with generators placing objects, just like the Rail Sleepers in your train example map.
Is there an easy way to access the Space Before and Space After parameters in Volume Spots so that I could easily change the spacing of all the rail sleepers in the scene by just changing a manager variable?

I was sad that I could not select multiple splines with the same generator and edit the values as shown below:

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Thank you very much!