Cannot dispose previous line and impacts

Hello everyone

I want to measure the distance between two arbitrary point, but when I want to get the new measurement I cannot dispose() the previous line and impacts point, how can i solve this problem?
Here is my PG:

It’s the impact mesh that should be disposed, not its position. You can do it like this:

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Hi @Evgeni_Popov thank you so much :pray: :pray: :pray: :pray: