How to store the value that is after the "Text.Contains" that I found?

[Makerstudios]

In this code, I want the XP number that will be after the [addXP: to add to the XP pool of the player.

    if (completionResponse.Choices[0].Text.Contains("[addXP: "))
    {
        stats.exp += 
    }

[MUG806]

You can use String.Replace to remove the unwanted parts of the string, then you can use int.Parse to convert the remaining number text to an int.