How do i stop teams with blank names

I have a problem with my game’s team creation. It’s that people can just put a " " as their team’s name and I don’t know how to stop it. I have searched for a while and I haven’t found a answer to this.

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I’m assuming you’re receiving text input from a textbox (or similar).

if string.find(TextBox.Text, "^%s*$") then --Matches empty strings and strings containing only whitespaces.
	--Do code.
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This is definitely a better way to do this I’m gonna remove my comment.