I have a number that I want to be editable in the inspector. However, I want to restrict that number to be a multiple of 10. I can always just go into the code and set it to the nearest multiple of 10, but I'd rather force it in the inspector. I am willing to use an int, float, Vector, or really any sort that can hold a number. How can I do this?

  • \$\begingroup\$ So you want 26 would be 30 and 24 would be 20 when you run the scene? \$\endgroup\$ Dec 20, 2015 at 17:07
  • \$\begingroup\$ I want either a slider that only goes to 0, 10, 20, etc. or a field that either disallows invalid input, or rounds it. \$\endgroup\$
    – Evorlor
    Dec 20, 2015 at 17:08

1 Answer 1


I'd use OnValidate for this. It gets called anytime the user changes something in the Inspector, but only in the Unity editor, so it doesn't add unnecessary checks into a compiled build of the game.

public class SnapTest : MonoBehaviour {

    [Range(min:-50, max:50)]
    public float snappedValue;

    void OnValidate()
        snappedValue = Mathf.Round(snappedValue / 10f) * 10f;

This gives you a snapping slider like this:

Example of the Inspector UI


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