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> I want to use string.find and it returns two numbers, but I do not know how
> to use this return.
> I tried :
> a="cou   cou cou";
> b=string.find(a,"(%s+)");

Try the code below.

The b will contain 4 and e will contain 6.
b is the start of the first run of spaces in a, e is the end.
	"cou   cou cou";
String positions in Lua start at 1.